# Bell 47G-5A - Type: Aircraft model (FAA registry) - Registry code: 1181034 - Manufacturer (registry): BELL - Model: 47G-5A - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Reciprocating - Seats: 3 - Weight class: Up to 12,499 lb - Cruise speed: 78 mph - Certification: Type certificated - Data sheet: [TCDS 2H3](https://openairdocs.org/tcds/2H3) (OpenAirDocs) - Holder: Scott's-Bell 47 Inc - Registered aircraft: 19 - Page: https://openairdocs.org/model/bell-47g-5a Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 2009-12-01](https://openairdocs.org/ad/2009-12-01): Main rotor blade box beam clip (clip) · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Jun 29, 2009 - [AD 2005-21-04](https://openairdocs.org/ad/2005-21-04): Weld assembly scissors bracket · Revise mast controls and remove stabilizer bar and install… (Scott's-Bell 47 STC SH2772SW). Effective Nov 21, 2005 - [AD 2001-17-17](https://openairdocs.org/ad/2001-17-17): Main Rotor Blade Grip Threads · Scotts-Bell 47 47B, 47B3, 47D and 19 more. Effective Oct 3, 2001 - [AD 98-07-09](https://openairdocs.org/ad/98-07-09): Stabilizer Bar Damper Link Assembly · Scotts-Bell 47 47B, 47B3, 47D and 19 more. Effective May 6, 1998 - [AD 96-06-12](https://openairdocs.org/ad/96-06-12): Inspect Tail Rotor Blade & Abrasion Strip · Scotts-Bell 47 47B, 47B3, 47D and 19 more. Effective May 29, 1996 - [AD 91-20-10](https://openairdocs.org/ad/91-20-10): Main Rotor Grip · Scotts-Bell 47 47G-2, 47G-2A, 47G-2A-1 and 11 more. Effective Nov 14, 1991 - [AD 85-08-03](https://openairdocs.org/ad/85-08-03): Tail Rotor Blade Assemblies · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Apr 29, 1985 - [AD 85-02-06](https://openairdocs.org/ad/85-02-06): AN/NAS Standard Bolts · Scotts-Bell 47 47G-2A, 47G-2A-1, 47G-3 and 12 more. Effective Feb 6, 1985 - [AD 81-17-01](https://openairdocs.org/ad/81-17-01): Starting Vibrator Assemblies · Bendix Starting Vibrator Assemblies, B-2, B-2A and 49 more. Effective Aug 13, 1981 - [AD 80-10-04 R1](https://openairdocs.org/ad/80-10-04-R1): Tail Rotor Blades · Continental Copters OH-13H, OH-13E, OH-13E and 26 more. Effective Feb 28, 1981 - [AD 81-04-03](https://openairdocs.org/ad/81-04-03): Tail Rotor Drive Assembly · Continental Copters OH-13H, OH-13E, OH-13E and 26 more. Effective Feb 2, 1981 - [AD 80-21-09 R1](https://openairdocs.org/ad/80-21-09-R1): Tail Rotor Pitch Link · Continental Copters OH-13H, OH-13E, OH-13E and 26 more. Effective Nov 24, 1980 - [AD 80-23-02](https://openairdocs.org/ad/80-23-02): Turbine Power Conversions · Allison 250-C20/250-C20B engine (Siam Hiller Holdings STC SH177WE or 2 others). Effective Nov 20, 1980 - [AD 79-23-07](https://openairdocs.org/ad/79-23-07): Soloy Conversion per STC SH657NW · Allison 250-C18A, -C18C, -C20, -C20B engine (Siam Hiller Holdings STC SH657NW). Effective Nov 26, 1979 - [AD 78-03-01](https://openairdocs.org/ad/78-03-01): Hopper Support Bracket (STC SH357SW) · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Mar 6, 1978 - [AD 77-21-01](https://openairdocs.org/ad/77-21-01): Tail Rotor Gear Boxes · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Nov 14, 1977 - [AD 70-10-08](https://openairdocs.org/ad/70-10-08): Tail Rotor Grips · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Jul 20, 1976 - [AD 74-08-02](https://openairdocs.org/ad/74-08-02): Mast Control Stabilizer Bar Assembly · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Jun 14, 1974 - [AD 74-07-01](https://openairdocs.org/ad/74-07-01): Main Rotor Control Tube Assembly · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective May 30, 1974 - [AD 73-19-04](https://openairdocs.org/ad/73-19-04): Main Rotor Blade Grip · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Oct 10, 1973 - [AD 70-08-02](https://openairdocs.org/ad/70-08-02): Tail Rotor Drive Shaft · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Jan 1, 1971 - [AD 65-04-01](https://openairdocs.org/ad/65-04-01): Freewheeling Clutch · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Feb 17, 1965 - [AD 62-27-02](https://openairdocs.org/ad/62-27-02): Wood Tail Rotor Blades · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Jan 29, 1963 - [AD 62-23-02](https://openairdocs.org/ad/62-23-02): Main Rotor Mast Thrust Bearing · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Oct 29, 1962 - [AD 61-22-01](https://openairdocs.org/ad/61-22-01): Pitch Link Rod End Bearing · Scotts-Bell 47 47, 47B, 47B3 and 21 more. Effective Nov 7, 1961 - [AD 59-05-01](https://openairdocs.org/ad/59-05-01): Tail Rotor Blade Inspection · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 58-26-02](https://openairdocs.org/ad/58-26-02): M-S MA4-5AA Carburetor · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 57-08-01](https://openairdocs.org/ad/57-08-01): Tail Rotor Drive Shafts · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 57-07-02](https://openairdocs.org/ad/57-07-02): Rotor Hub Equalizer Link · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 56-25-02](https://openairdocs.org/ad/56-25-02): Tail Rotor Pitch Bearings · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 56-15-02](https://openairdocs.org/ad/56-15-02): Swashplate Control Ring · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 56-05-01](https://openairdocs.org/ad/56-05-01): Tail Rotor Drive Shafts · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 55-16-01](https://openairdocs.org/ad/55-16-01): Tail Rotor Hub Fillet · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 52-28-03](https://openairdocs.org/ad/52-28-03): Tail Rotor Gearbox Shaft · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 52-21-01](https://openairdocs.org/ad/52-21-01): Lord Mount Guards · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 52-05-03](https://openairdocs.org/ad/52-05-03): Engine Mount Safety Strap · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 52-01-06](https://openairdocs.org/ad/52-01-06): Tail Boom Spoiler · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 51-27-01](https://openairdocs.org/ad/51-27-01): Engine Mount Replacement · Scotts-Bell 47 47, 47B, 47B3 and 21 more - [AD 48-13-02](https://openairdocs.org/ad/48-13-02): Fuel Pump Rocker Pin · Scotts-Bell 47 47, 47B, 47B3 and 21 more Historical (superseded or no longer in force): - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 - [AD 2000-18-51](https://openairdocs.org/ad/2000-18-51) (historical): Main Rotor Blade Grip · Bell Helicopter Textron 47B, 47B3, 47D and 19 more. Effective Nov 30, 2000 - [AD 86-06-08 R1](https://openairdocs.org/ad/86-06-08-R1) (historical): Main Rotor Blade Grips · Bell Helicopter Textron 47B, 47B3, 47D and 25 more. Effective Jul 10, 1987 ## Registered aircraft (19) - [N14807](https://openairdocs.org/aircraft/N14807): [Hammock Flying Service Inc](https://openairdocs.org/faa-owner/HAMMOCK%20FLYING%20SERVICE%20INC), [Smithville, AR](https://openairdocs.org/faa-place/AR/Smithville), built 1972, S/N 25078 - [N14861](https://openairdocs.org/aircraft/N14861): [Brown Helicopter Inc](https://openairdocs.org/faa-owner/BROWN%20HELICOPTER%20INC), [Pensacola, FL](https://openairdocs.org/faa-place/FL/Pensacola), built 1972, S/N 25089 - [N222AJ](https://openairdocs.org/aircraft/N222AJ): [Watson Tommy R](https://openairdocs.org/faa-owner/WATSON%20TOMMY%20R), [Thibodaux, LA](https://openairdocs.org/faa-place/LA/Thibodaux), built 1973, S/N 25122 - [N257PC](https://openairdocs.org/aircraft/N257PC): [Pinellas County](https://openairdocs.org/faa-owner/PINELLAS%20COUNTY), [Clearwater, FL](https://openairdocs.org/faa-place/FL/Clearwater), built 1972, S/N 25077 - [N25LB](https://openairdocs.org/aircraft/N25LB): [Scotts Helicopter Services Inc](https://openairdocs.org/faa-owner/SCOTTS%20HELICOPTER%20SERVICES%20INC), [Le Sueur, MN](https://openairdocs.org/faa-place/MN/Le%20Sueur), built 1972, S/N 25102 - [N2988W](https://openairdocs.org/aircraft/N2988W): [Scibelli Christopher S](https://openairdocs.org/faa-owner/SCIBELLI%20CHRISTOPHER%20S), [Southwick, MA](https://openairdocs.org/faa-place/MA/Southwick), built 1972, S/N 25069 - [N2993W](https://openairdocs.org/aircraft/N2993W): [Gribben James E](https://openairdocs.org/faa-owner/GRIBBEN%20JAMES%20E), [Bakersfield, CA](https://openairdocs.org/faa-place/CA/Bakersfield), built 1972, S/N 25074 - [N307KC](https://openairdocs.org/aircraft/N307KC): [Egenolf Evan Patrick](https://openairdocs.org/faa-owner/EGENOLF%20EVAN%20PATRICK), [Laramie, WY](https://openairdocs.org/faa-place/WY/Laramie), built 1972, S/N 25065 - [N4348P](https://openairdocs.org/aircraft/N4348P): [Wilbur-Ellis Co](https://openairdocs.org/faa-owner/WILBUR-ELLIS%20CO), [Salinas, CA](https://openairdocs.org/faa-place/CA/Salinas), S/N 25059 - [N58078](https://openairdocs.org/aircraft/N58078): [Morten Helicopters](https://openairdocs.org/faa-owner/MORTEN%20HELICOPTERS), [Larlmore, ND](https://openairdocs.org/faa-place/ND/Larlmore), built 1973, S/N 25110 - [N58115](https://openairdocs.org/aircraft/N58115): [Morten Jesse L](https://openairdocs.org/faa-owner/MORTEN%20JESSE%20L), [Larimore, ND](https://openairdocs.org/faa-place/ND/Larimore), built 1973, S/N 25117 - [N58124](https://openairdocs.org/aircraft/N58124): [North-Air Helicopters Inc](https://openairdocs.org/faa-owner/NORTH-AIR%20HELICOPTERS%20INC), [Frankfort, NY](https://openairdocs.org/faa-place/NY/Frankfort), built 1973, S/N 25124 - [N58133](https://openairdocs.org/aircraft/N58133): [Triple S Aviation LLC](https://openairdocs.org/faa-owner/TRIPLE%20S%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), S/N 25129 - [N59402](https://openairdocs.org/aircraft/N59402): [Galloway Douglas A](https://openairdocs.org/faa-owner/GALLOWAY%20DOUGLAS%20A), [Sandusky, OH](https://openairdocs.org/faa-place/OH/Sandusky), built 1973, S/N 25139 - [N59403](https://openairdocs.org/aircraft/N59403): [Worthy Gary L](https://openairdocs.org/faa-owner/WORTHY%20GARY%20L), [Atwood, KS](https://openairdocs.org/faa-place/KS/Atwood), built 1973, S/N 25140 - [N715BH](https://openairdocs.org/aircraft/N715BH): [Wilbur-Ellis Co](https://openairdocs.org/faa-owner/WILBUR-ELLIS%20CO), [Salinas, CA](https://openairdocs.org/faa-place/CA/Salinas), built 1973, S/N 25105 - [N8135J](https://openairdocs.org/aircraft/N8135J): [Wilbur-Ellis Co](https://openairdocs.org/faa-owner/WILBUR-ELLIS%20CO), [Salinas, CA](https://openairdocs.org/faa-place/CA/Salinas), built 1972, S/N 25060 - [N8413D](https://openairdocs.org/aircraft/N8413D): [Experimental Aircraft Association Inc](https://openairdocs.org/faa-owner/EXPERIMENTAL%20AIRCRAFT%20ASSOCIATION%20INC), [Oshkosh, WI](https://openairdocs.org/faa-place/WI/Oshkosh), S/N 25091 - [N86SD](https://openairdocs.org/aircraft/N86SD): [Young Randall K](https://openairdocs.org/faa-owner/YOUNG%20RANDALL%20K), [Clearwater Beach, FL](https://openairdocs.org/faa-place/FL/Clearwater%20Beach), built 1973, S/N 25118 ## NTSB investigations (40) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB GAA16CA293](https://openairdocs.org/ntsb/GAA16CA293), Jun 8, 2016: Bell 47G (N25LB), Hastings, MN, substantial damage. Probable cause: The pilot's failure to attain a positive rate of climb during takeoff from a service truck, which resulted in an impact with terrain and substantial damage to the tail boom and fuselage. - [NTSB WPR14CA115](https://openairdocs.org/ntsb/WPR14CA115), Feb 18, 2014: Bell 47G 5A (N715BH), Greenfield, CA, substantial damage. Probable cause: The pilot's failure to maintain clearance from a power pole during low-altitude maneuvering flight. - [NTSB WPR13CA084](https://openairdocs.org/ntsb/WPR13CA084), Jan 3, 2013: Bell 47G (N14841), Five Points, CA, substantial damage. Probable cause: The pilot’s failure to maintain clearance with a telephone pole during a low-level maneuver. - [NTSB CHI07LA277](https://openairdocs.org/ntsb/CHI07LA277), Aug 24, 2007: Bell 47G-5A (N25LB), Anoka, MN, substantial damage. Probable cause: The loss of helicopter pitch control for undetermined reasons during the aerial application maneuver and the pilot's inability to control the aircraft during the descent.. A contributing factor to… - [NTSB DEN05CA078](https://openairdocs.org/ntsb/DEN05CA078), May 19, 2005: Bell 47G-5A (N59403), Brush, CO, substantial damage. Probable cause: The pilot's failure to maintain clearance from the truck trailer during takeoff. A factor contributing to this accident was the truck trailer. - [NTSB CHI03LA184](https://openairdocs.org/ntsb/CHI03LA184), Jun 28, 2003: Bell 47G-5A (N8413D), Sandusky, MI, substantial damage. Probable cause: The failure of the ignition switch leading to an engine power loss in cruise flight and the subsequent high flare during autorotation. Factors contributing to the accident were the pilot's… - [NTSB ATL02LA094](https://openairdocs.org/ntsb/ATL02LA094), Apr 26, 2002: Bell 47G-5A (N14838), La Belle, FL, substantial damage. Probable cause: The pilot's failure to maintain clearance of a tree while maneuvering, which resulted in an in-flight collision with the tree and subsequent uncontrolled descent and collision with terrain. - [NTSB CHI00TA306](https://openairdocs.org/ntsb/CHI00TA306), Sep 22, 2000: Bell 47G-5A (N14841), Economy, IN, substantial damage. Probable cause: The pilot failed to maintain control of the helicopter while attempting a landing on unsuitable terrain. A factor associated with the accident was the grass covered, down slope in the terrain. - [NTSB LAX97LA006](https://openairdocs.org/ntsb/LAX97LA006), Oct 7, 1996: Bell 47G-5A (N8135J), King City, CA, substantial damage. Probable cause: the pilot's failure to maintain adequate rotor rpm during the takeoff initial climb. - [NTSB NYC95LA100](https://openairdocs.org/ntsb/NYC95LA100), May 4, 1995: Bell 47G-5A (N444GW), Middleboro, MA, substantial damage. Probable cause: the pilot's failure to maintain airspeed during a low altitude aerial application turn, which resulted in inadvertent settling with power and the subsequent collision with the terrain. - [NTSB NYC94LA110](https://openairdocs.org/ntsb/NYC94LA110), Jul 2, 1994: Bell 47-G5 (N59400), Wareham, MA, substantial damage. Probable cause: The pilot's inadequate inflight planning which resulted in fuel exhaustion and the loss of engine power. - [NTSB CHI94FA330](https://openairdocs.org/ntsb/CHI94FA330), Mar 22, 1994: Bell 47G-5A (N2991W), Wisconsin Rpds, WI, destroyed, 1 fatal. Probable cause: Undetermined. - [NTSB LAX92LA262](https://openairdocs.org/ntsb/LAX92LA262), Jun 21, 1992: Bell 47-G5A (N211CB), Pago Pago (Pacific Ocean), substantial damage. Probable cause: THE PILOT'S INADEQUATE PREFLIGHT INSPECTION IN FAILING TO ENSURE THAT ALL SKID TIEDOWNS WERE REMOVED PRIOR TO THE ATTEMPTED TAKEOFF. - [NTSB LAX92LA030](https://openairdocs.org/ntsb/LAX92LA030), Oct 31, 1991: Bell 47-G5A (N7162R), Kosrae, destroyed, 1 fatal. Probable cause: THE PILOT-IN-COMMAND'S IMPROPER PREFLIGHT INSPECTION OF THE HELICOPTER RESULTING IN A TIEDOWN STRAP NOT BEING REMOVED FROM THE RIGHT SKID AND SUBSEQUENT ROLL OVER ON TAKEOFF. - [NTSB FTW91LA166](https://openairdocs.org/ntsb/FTW91LA166), Sep 26, 1991: Bell 47G-5A (N59424), Pearsall, TX, destroyed. Probable cause: THE PILOT'S FAILURE TO MAINTAIN ADEQUATE VISUAL LOOKOUT FOR OBSTACLES DURING OPERATIONS FROM A REMOTE SITE. - [NTSB LAX91LA128](https://openairdocs.org/ntsb/LAX91LA128), Mar 10, 1991: Bell 47G-5A (N59403), Farmington, CA, substantial damage. Probable cause: THE CONTAMINATION OF THE ENGINE INDUCTION AIR FILTER. SOFT TERRAIN DURING THE TOUCHDOWN WAS A FACTOR IN THE ACCIDENT. - [NTSB LAX88DUG07](https://openairdocs.org/ntsb/LAX88DUG07), Sep 18, 1988: Bell 47G-5A (N4099G), Perris, CA, substantial damage - [NTSB NYC88LA214](https://openairdocs.org/ntsb/NYC88LA214), Aug 11, 1988: Bell 47G5 (N14861), Biddeford, ME, substantial damage - [NTSB NYC86LA191](https://openairdocs.org/ntsb/NYC86LA191), Jul 20, 1986: Bell 47G-5A (N59400), Portland, CT, substantial damage - [NTSB LAX86LA211](https://openairdocs.org/ntsb/LAX86LA211), May 6, 1986: Bell 47G-5A (N2996W), Agana, destroyed, 1 fatal - [NTSB MIA85FA016](https://openairdocs.org/ntsb/MIA85FA016), Oct 22, 1984: Bell 47G-5A (N59424), Belle Glade, FL, substantial damage - [NTSB LAX84LA424](https://openairdocs.org/ntsb/LAX84LA424), Aug 1, 1984: Bell 47G-5A (N4099G), Winterhaven, CA, substantial damage - [NTSB FTW84LA282](https://openairdocs.org/ntsb/FTW84LA282), Jun 21, 1984: Bell 47G-5A (N14807), Houma, LA, substantial damage - [NTSB CHI82DA198](https://openairdocs.org/ntsb/CHI82DA198), Jun 1, 1982: Bell 47G-5A (N2988W), New Philadelphi, OH, destroyed - [NTSB LAX81FVM21](https://openairdocs.org/ntsb/LAX81FVM21), May 3, 1981: Bell 47G-5A (N2994W), Soledad, CA, destroyed - [NTSB LAX80FUK01](https://openairdocs.org/ntsb/LAX80FUK01), Sep 11, 1980: Bell 47G-5A (N7990J), Yuma, AZ, destroyed - [NTSB NYC80FA029](https://openairdocs.org/ntsb/NYC80FA029), Mar 27, 1980: Bell 47G-5A (N58133), Fayetteville, PA, destroyed, 1 fatal - [NTSB FTW80DRG09](https://openairdocs.org/ntsb/FTW80DRG09), Nov 29, 1979: Bell 47G-5A (N58132), Alice, TX, substantial damage - [NTSB MKC78DCD49](https://openairdocs.org/ntsb/MKC78DCD49), Aug 29, 1978: Bell 47G-5A (N14841), Manson, IA, substantial damage - [NTSB MKC78FCJ13](https://openairdocs.org/ntsb/MKC78FCJ13), Mar 14, 1978: Bell 47G5A (N7989J), Kearney, NE, destroyed - [NTSB LAX77FA057](https://openairdocs.org/ntsb/LAX77FA057), Jul 10, 1977: Bell 47G-5A (N6276N), Maricopa, AZ, destroyed, 1 fatal - [NTSB MKC77DCJ27](https://openairdocs.org/ntsb/MKC77DCJ27), Jun 29, 1977: Bell 47G5A (N7989J), Red Cloud, NE, substantial damage - [NTSB LAX76DUJ29](https://openairdocs.org/ntsb/LAX76DUJ29), Sep 8, 1975: Bell 47G-5 (N4099G), Chandler, AZ, substantial damage - [NTSB LAX75DUM14](https://openairdocs.org/ntsb/LAX75DUM14), Oct 22, 1974: Bell 47G-5A (N83069), Lat 02s (Atlantic Ocean), destroyed - [NTSB CHI75FEE14](https://openairdocs.org/ntsb/CHI75FEE14), Aug 20, 1974: Bell 47G5A (N211CB), Hinsdale, IL, substantial damage - [NTSB CHI74AC099](https://openairdocs.org/ntsb/CHI74AC099), Jun 27, 1974: Bell 47G-5A (N59399), Detroit, MI, destroyed, 2 fatal - [NTSB DEN74DTE43](https://openairdocs.org/ntsb/DEN74DTE43), Jan 12, 1974: Bell 47G-5 (N2991W), Aurora, CO, substantial damage - [NTSB FTW74FRD18](https://openairdocs.org/ntsb/FTW74FRD18), Nov 8, 1973: Bell 47G-5A (N2994W), Belle Chasse, LA, destroyed - [NTSB DEN74FTE02](https://openairdocs.org/ntsb/DEN74FTE02), Jul 5, 1973: Bell 47G-5A (N2991W), Aurora, CO, substantial damage - [NTSB CHI73FEC08](https://openairdocs.org/ntsb/CHI73FEC08), Aug 28, 1972: Bell 47G-5A (N2988W), Blissfield, MI, substantial damage ## FAA accident and incident reports (46) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20160608009259A](https://openairdocs.org/incident/20160608009259A), Jun 8, 2016: Bell 47G-5A (N25LB), Hastings, MN, Substantial damage. The pilot was performing an agriculture spraying operation and had just refueled. (Tanks half full) in addition, the pilot had onloaded approximately 80-90… - [Accident 20140218002909A](https://openairdocs.org/incident/20140218002909A), Feb 18, 2014: Bell 47G-5A (N715BH), Greenfield, CA, Substantial damage. Helicopter N715BH struck a power pole with its main rotor blade impacted ground and rolled over. - [Accident 20130103000099A](https://openairdocs.org/incident/20130103000099A), Jan 3, 2013: Bell 47G-5A (N14841), Five Points, CA, Substantial damage. On January 3, 2013 a Bell 47G5A was approaching a field to spray a herbicide called "prowl". The aircraft approached the field of new garlic going under the 40… - [Incident 20080731841299I](https://openairdocs.org/incident/20080731841299I), Jul 31, 2008: Bell 47G5A (N58133), Angleton/Lake, TX, Minor damage. (-23) Maintenance ground run on helicopter with mechanic at the controls. Helicopter spun around several times while on ground striking a mechanic standing… - [Accident 20070824019979A](https://openairdocs.org/incident/20070824019979A), Aug 24, 2007: Bell 47G5A (N25LB), Ramsey, MN, Destroyed. (-23) During mosquito control application and enroute from aerial application area to nearby parking lot, pilot heard a loud pop then immediately lost pitch… - [Accident 20050519009619A](https://openairdocs.org/incident/20050519009619A), May 19, 2005: Bell 47G5A (N59403), Brush, CO, Substantial damage. (-23) Helicopter was resting on trailer, attached to chevy suburban. The pilot/new owner decided to remove helo from trailer. After starting helo pilot was… - [Accident 20030627028979A](https://openairdocs.org/incident/20030627028979A), Jun 27, 2003: Bell 47G5A (N8413D), Sandusky, MI, Substantial damage. (-23) Aircraft experienced sudden engine failure @ approx 400' AGL entered autorotation landed in bean field tail boom bent. Tr blades bent skid tubes bent… - [Accident 20000922036629A](https://openairdocs.org/incident/20000922036629A), Sep 22, 2000: Bell 47G5A (N14841), Losantville, IN, No damage. (-23) The pilot set the helicopter half on gravel and on grass. The helicopter rocked backward as he put weight on the skids. He pushed forward cyclic with no… - [Accident 19961007031299A](https://openairdocs.org/incident/19961007031299A), Oct 7, 1996: Bell 47G5A (N8135J), King City, CA, Substantial damage. During climb over power lines allowed rotor engine and airspeed decay. Unable correct. Settled with power to impact - [Accident 19950504009229A](https://openairdocs.org/incident/19950504009229A), May 4, 1995: Bell 47G5A (N444GW), Middleboro, MA, Substantial damage. Abrupt descent to ground during turn around from practice spray run. Impacted. No anomalies. Settling with power. - [Accident 19940702017159A](https://openairdocs.org/incident/19940702017159A), Jul 2, 1994: Bell 47G5A (N59400), Wareham, MA, Substantial damage. Ran out of fuel surveying dusting site. Too slow and low for safe autorotation. Impact in bog. Rotors chopped tail. - [Accident 19940322028079A](https://openairdocs.org/incident/19940322028079A), Mar 22, 1994: Bell 47G5A (N2991W), Wisconsin Rapod, WI, Destroyed, 1 fatal. Missing. Found 6MONTHS later in wooded area. Only 12MI west departure. No mechanical anomalies in engine, airframe. - [Incident 19930729037229I](https://openairdocs.org/incident/19930729037229I), Jul 29, 1993: Bell 47J2 (N444GW), Plymouth, MA, Minor damage. Engine quit while practicing autorotation maneuver. Autorotation to road. Carburtor idle. Cutoff plunger stuck. - [Accident 19920621026709A](https://openairdocs.org/incident/19920621026709A), Jun 21, 1992: Bell 47G5A (N211CB), Pago Pago, American Samoa, Substantial damage. Tried to depart ship pad with left rear skid attached. Rolled over on liftoff. - [Accident 19911031048229A](https://openairdocs.org/incident/19911031048229A), Oct 31, 1991: Bell 47G5A (N7162R), Kosrae Island, Guam, Destroyed, 1 fatal. Rolled over sideways into ocean while attempting to lift off shipboard helipad. Had neglected to untie right skid. - [Accident 19910926063239A](https://openairdocs.org/incident/19910926063239A), Sep 26, 1991: Bell 47G5A (N59424), Pearsall, TX, Destroyed. Powerline patrol helicopter struck wires on takeoff and crashed on a highway. Pilot did not see wires. - [Incident 19910907038669I](https://openairdocs.org/incident/19910907038669I), Sep 7, 1991: Bell 47G5A (N58125), Pago Pago, American Samoa. Partial engine power after takeoff. Forced landing in ocean. A wave rolled helicopter over. Surf washed it on reef. - [Accident 19910309004819A](https://openairdocs.org/incident/19910309004819A), Mar 9, 1991: Bell 47G5A (N59403), Farmington, CA, Substantial damage. Flew into liquid fertilizer during a turn from spray run. Lost engine RPM settled to ground. Air intake was fouled. - [Accident 19880918039149A](https://openairdocs.org/incident/19880918039149A), Sep 18, 1988: Bell 47G5A (N4099G), Perris, CA, Substantial damage. Lost tail rotor control on liftoff. Rotor hit ground along side of loader. Engine basket fatigue fractured. - [Accident 19880811032389A](https://openairdocs.org/incident/19880811032389A), Aug 11, 1988: Bell 47G5 (N14861), Block Island, RI, Substantial damage. Landing after pipeline patrol. Lost tail rotor effectiveness. Landing from a low hover. Made 360 prior ground impact - [Incident 19880325019619I](https://openairdocs.org/incident/19880325019619I), Mar 25, 1988: Bell 47G5A (N8413D), Charlotte, MI, Minor damage. Student had a tail rotor strike and a hard landing resulted while trying to hover. CFI failed to correct. - [Accident 19860720034619A](https://openairdocs.org/incident/19860720034619A), Jul 20, 1986: Bell 47G5A (N59400), Portland, CT, Substantial damage. The engine failed during takeoff. The helicopter landed on a sandbank. Cause of engine failure is undetermined. - [Accident 19860506076999A](https://openairdocs.org/incident/19860506076999A), May 6, 1986: Bell 47G5A (N2996W), Agana, Guam, Destroyed, 1 fatal. Main rotor blades struck the ship as aircraft lifted off with a skid tiedown rope attached. Aircraft sank in ocean. - [Accident 19841022057699A](https://openairdocs.org/incident/19841022057699A), Oct 22, 1984: Bell 47G5A (N59424), Belle Glade, FL, Substantial damage. After liftoff, the rotor blades struck a hangar support pole after encountering a gust of wind. Ground crew injury. - [Accident 19840801036639A](https://openairdocs.org/incident/19840801036639A), Aug 1, 1984: Bell 47G5A (N4099G), Winterhaven, CA, Substantial damage. Pilot allowed rotor RPM to decrease after lift off, helicopter settled, left skid dug in causing crash. - [Incident 19840731066319I](https://openairdocs.org/incident/19840731066319I), Jul 31, 1984: Bell 47G5A (N7990J), Yuma, AZ, Minor damage. Engine lost power due to a stuck valve. Hard landing in cotton field caused main rotors to chop off the tailboom. - [Accident 19840621029389A](https://openairdocs.org/incident/19840621029389A), Jun 21, 1984: Bell 47G5A (N14807), Houma, LA, Substantial damage. Crash occurred during emergency landing after power failure because fuel control governor spring had broken. - [Incident 19830825049819I](https://openairdocs.org/incident/19830825049819I), Aug 25, 1983: Bell 47G5A (N14807), Sulphur, LA, Minor damage. Five inches of the stabilizer bar separated while spraying a pond. Vibration occurred. Landed safely. - [Accident 19820601020139A](https://openairdocs.org/incident/19820601020139A), Jun 1, 1982: Bell 47G5A (N2988W), New Philadelphi, OH, Destroyed. During power line patrol pilot lost control of helicopter. Aft cycle control lost. Failure pn 20057415D. - [Incident 19810524056129I](https://openairdocs.org/incident/19810524056129I), May 24, 1981: Bell 47G5A (N4099G), Somerton, AZ, Substantial damage. Mechanic was making engine runup. Aircraft became airborne and crashed. The mechanic was not rated in helicopter. - [Accident 19810503022249A](https://openairdocs.org/incident/19810503022249A), May 3, 1981: Bell 47G5A (N2994W), Soledad, CA, Destroyed. Helicopter developed yaw on pull up from swath run. Crash landed. Found score and heat discolored clutch. - [Accident 19800911042459A](https://openairdocs.org/incident/19800911042459A), Sep 11, 1980: Bell 47G5A (N7990J), Yuma, AZ, Destroyed. Lost rotor RPM on night spray run. Struck tree on emergency landing. Found rotor transmission bearing failure. - [Accident 19800327007149A](https://openairdocs.org/incident/19800327007149A), Mar 27, 1980: Bell 47G5A (N58133), Fayetteville, PA, Destroyed. Lifted off helipad dolly in backyard. Struck residence on climbout. Factor; insufficient egress route. - [Incident 19800205020689I](https://openairdocs.org/incident/19800205020689I), Feb 5, 1980: Bell 47G5A (N58115), Buffalo, NY. Pilot took off with inadequate fuel. Engine stopped running due to fuel exhaustion. - [Accident 19791129033509A](https://openairdocs.org/incident/19791129033509A), Nov 29, 1979: Bell 47G5A (N58132), Alice, TX, Substantial damage. Tried takeoff from trailer. Skid tiedown fell back in place. Helicopter rolled over off trailer. - [Incident 19781031027919I](https://openairdocs.org/incident/19781031027919I), Oct 31, 1978: Bell 47G5A (N8135J), Greeley, CO, Minor damage. Student practicing autorotation from 3 ft. on touchdown. Machine rocked forward, then back, damaged tailrotor. - [Accident 19780829027509A](https://openairdocs.org/incident/19780829027509A), Aug 29, 1978: Bell 47G5A (N14841), Manson, IA, Substantial damage. Off airport operation. - [Accident 19780314005049A](https://openairdocs.org/incident/19780314005049A), Mar 14, 1978: Bell 47B3 (N7989J), Kearney, NE, Destroyed. In hover at 3 to 5 ft. aircraft rolled to right and blades struck. - [Accident 19770710032279A](https://openairdocs.org/incident/19770710032279A), Jul 10, 1977: Bell 47G5 (N6276N), Maricopa, AZ, Destroyed. Aircraft crashed inverted. - [Accident 19770629018429A](https://openairdocs.org/incident/19770629018429A), Jun 29, 1977: Bell 47G5A (N7989J), Red Cloud, NE, Substantial damage. During lift-off from trailer,skid caught in tie-down chain. - [Accident 19750908029459A](https://openairdocs.org/incident/19750908029459A), Sep 8, 1975: Bell 47G5 (N4099G), Chandler, AZ, Substantial damage. Rapid intense vib,lndd in damp soft plowed fld. Skid toes dug in,m/r blade hit t/r drive & boom. - [Accident 19740820029209A](https://openairdocs.org/incident/19740820029209A), Aug 20, 1974: Bell 47G5A (N211CB), Hinsdale, IL, Substantial damage. Plt noted hi dscnt rate drg flare,made run-on type ldg. - [Accident 19740627027641A](https://openairdocs.org/incident/19740627027641A), Jun 27, 1974: Bell 47G5A (N59399), Detroit, MI, Substantial damage, 1 fatal. Patrol duty ovr Detroit river. Tower personnel did not maintain track of each acft. - [Accident 19740112001249A](https://openairdocs.org/incident/19740112001249A), Jan 12, 1974: Bell 47G5A (N2991W), Aurora, CO, Substantial damage. Accident site snow covered. Hit tail first on demo autorotation. - [Accident 19731108035419A](https://openairdocs.org/incident/19731108035419A), Nov 8, 1973: Bell 47G3B1 (N2994W), Belle Chasse, LA, Destroyed. Excessv wear fnd on t/r drive gr and quill asmbly inadeqt mesh-345 hrs.360 turns,closed throttle. - [Accident 19730705020219A](https://openairdocs.org/incident/19730705020219A), Jul 5, 1973: Bell 47G5A (N2991W), Aurora, CO, Substantial damage. Student rolled off throttle durg hover. ## Service difficulty reports (19) As reported by operators and repair stations, by the model named in the report. - [SDR 2005FA0001075](https://openairdocs.org/sdr/2005FA0001075), Jul 29, 2005: BUSHING. WORN. MAGNETO IDLER GEAR SHAFT BROKE, THE BREAK WAS CAUSED BY A WORN BUSHING ON THE GEAR/SHAFT P/N'S 76091 & 76283 THAT DRIVES IT. THIS IS THE SECOND TIME THIS SHAFT - [SDR GBHA0507001](https://openairdocs.org/sdr/GBHA0507001), Jul 12, 2005: IDLER GEAR. BROKEN. MAGNETO DRIVE IDLER GEAR SHAFT FAILED CAUSING BOTH MAGNETOS TO BECOME INOPERATIVE AND THE ENGINE FAILED. THE FAILURE APPEARED TO ORIGINATE AT THE OIL HOLE. TOTA - [SDR AUS20040185](https://openairdocs.org/sdr/AUS20040185), Mar 14, 2004: CLAMP. CRACKED. (AUS) MAIN ROTOR STABILIZER BAR CLAMP CRACKED. - [SDR AUS20021416](https://openairdocs.org/sdr/AUS20021416), Dec 10, 2002: VALVE. SEPARATED. (AUS) AIRCRAFT SUFFERED INFLIGHT POWER LOSS. INVESTIGATION FOUND LH FUEL TANK CRASHWORTHY SYSTEM BREAKAWAY FUEL VALVE BEGINNING TOSEPARATE WHICH RESTRICTED FUEL - [SDR AUS20021053](https://openairdocs.org/sdr/AUS20021053), Sep 18, 2002: CRANKSHAFT. CRACKED. (AUS) CRANKSHAFT CRACKED. CRACK RAN THROUGH THE OIL GALLERY, ACROSS THE THRUST FACE AND THROUGH THE OPPOSITE OIL GALLERY. CRACK EXTENDS THROUGH ALMOST 60% OF TH - [SDR AU010281](https://openairdocs.org/sdr/AU010281), Mar 22, 2001: GRIP. CRACKED. (AUS) MAIN ROTOR GRIP CRACKED IN SECOND, THIRD AND FOURTH THREADS. FOUND DURING EDDY CURRENT INSPECTION. X-RAY INSPECTION RESULTSWERE INCONCLUSIVE. - [SDR AU000165](https://openairdocs.org/sdr/AU000165), Mar 28, 2000: LONGERON. CRACKED. (AUS) FUSELAGE LOWER LONGERON CRACKED. FOUND DURING X-RAY INSPECTION IAW AD/BELL47/62 AMDT2. - [SDR AU981525](https://openairdocs.org/sdr/AU981525), Nov 3, 1998: DRIVE. STRIPPED. (AUS) MAIN TRANSMISSION FAN PULLEY DRIVE STRIPPED. SUSPECT INCORRECTLY TORQUED AT LAST MAINTENANCE CHECK. - [SDR AU981524](https://openairdocs.org/sdr/AU981524), Nov 3, 1998: SHAFT. WORN. (AUS) MAIN TRANSMISSION FAN PULLEY ASSEMBLY GEARSHAFT SPLINES WORN. SEE OPERATOR CONTROL NR AU981525 FOR ADDITIONAL INFORMATION. - [SDR 96ZZZX2921](https://openairdocs.org/sdr/96ZZZX2921), May 14, 1996: MOUNT. CRACKED. DURING 100-HOUR ANNUAL INSPECTION, CRACK NOTED AT FORWARD TRUNNION CLUSTER. AREA WAS STRIPPED OF PAINT AND DYE CHECKED. CRACK CONFIRMED. A BULLETIN WAS ISSUED B - [SDR 96ZZZX2301](https://openairdocs.org/sdr/96ZZZX2301), Mar 28, 1996: BEARING. MAKING METAL. UPON FINDING METAL IN OIL SCREEN, TRANSMISSION WAS REMOVED AND DISASSEMBLED. LOWER SUN GEAR BEARING WAS FOUND TO BE MAKING METAL. SUBMITTER STATES THIS HAS BEEN - [SDR 96ZZZX2246](https://openairdocs.org/sdr/96ZZZX2246), Mar 1, 1996: GEAR. FAILED. ENGINE ABRUPTLY QUIT RUNNING WHILE ON GROUND. INVESTIGATION REVEALED ASSESSORY DRIVE GEAR, WHICH IS A TWO-PIECE GEAR ASSEMBLED AT THE FACTORY, HAD FAILED. THE 6 - [SDR 96ZZZX266](https://openairdocs.org/sdr/96ZZZX266), Dec 12, 1995: TUBE. RUSTED. DURING 1,200-HOUR INSPECTION OF INTERIOR OF FLIGHT CONTROL TUBES, 2 TUBES HAD INTERNAL RUST. REPLACED TUBES. (AD 74-07-01.) SUBMITTER STATED THIS INSPECTION INT - [SDR 96ZZZX265](https://openairdocs.org/sdr/96ZZZX265), Dec 12, 1995: TUBE. RUSTED. DURING 1,200-HOUR INSPECTION OF INTERIOR OF FLIGHT CONTROL TUBES, 2 TUBES HAD INTERNAL RUST. REPLACED TUBES. (AD 74-07-01.) SUBMITTER STATED THIS INSPECTION INT - [SDR 96ZZZX101](https://openairdocs.org/sdr/96ZZZX101), Dec 1, 1995: SPIDER SET. DEFECTIVE. RECEIVED SPIDER SET FROM BELL AS A NEW REPLACEMENT PART. PLANETARY PIN HOLES ARE ROUGH AND HAVE TOO MUCH UNEVEN CHAMFER. - [SDR 95ZZZX6322](https://openairdocs.org/sdr/95ZZZX6322), Oct 30, 1995: SPIDER SET. MISMANUFACTURED. RECEIVED SPIDER GEAR SET AS NEW REPLACEMENT PART FROM BELL. DURING RECEIVING INSPECTION, NOTED PINION PIN HOLE FINISH VERY ROUGH AND CHAMFER ROUGH AND ECCENTRIC - [SDR 95ZZZX6241](https://openairdocs.org/sdr/95ZZZX6241), Oct 17, 1995: BEARING. FAILED. OPERATOR REPORTS 5 TRANSMISSION BEARING FAILURES WITHIN THE LAST YEAR. SUSPECT IMPROPERLY MANUFACTURED BEARINGS, AND, AS A RESULT, IMPROPER INSTALLATION. AN ACC - [SDR 95ZZZX6195](https://openairdocs.org/sdr/95ZZZX6195), Oct 16, 1995: MOUNT. IMPROPER WELD. ENGINE MOUNT PAINT STRIPPED AND CLEANED FOR MAGNAFLUX TO PERFORM 1,200-HOUR INSPECTION. WELD JOINING TUBE TO LT MOUNT FITTING INCOMPLETE (MISSING .50 INCH OF WE - [SDR 95ZZZX6086](https://openairdocs.org/sdr/95ZZZX6086), Jul 12, 1995: BEARING. MAKING METAL. UPON FINDING METAL IN OIL SCREEN, TEAR DOWN INSPECTION OF MAIN TRANSMISSION WAS PERFORMED. LOWER SUNGEAR BEARING WAS FOUND TO BE THE CAUSE OF THE METAL CONTAMIN ## STCs that may be installed (OpenAirDocs) (123, first 50) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SA800EA](https://openairdocs.org/stc/SA800EA): Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies. Whelen Aerospace Technologies - [STC SH153WE](https://openairdocs.org/stc/SH153WE): Installation of Transland Model54170 agricultural spray system. Texas Transland LLC - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc - [STC SR09066RC](https://openairdocs.org/stc/SR09066RC): Fabricate the HAC-47-3 Tail Rotor Blade. Scott's-Bell 47 Inc - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SH2772SW](https://openairdocs.org/stc/SH2772SW): Revise mast controls and remove stabilizer bar and install control system. Scott's-Bell 47 Inc - [STC SA615EA](https://openairdocs.org/stc/SA615EA): Installation of a Whelen Anti-Collision Strobe Light System as replacement for originally installed anti-collision lights. Whelen Aerospace Technologies - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SR01845SE](https://openairdocs.org/stc/SR01845SE): Installation of a barrier air filtration system. Cascade Flying Service LLC - [STC SR00408NY](https://openairdocs.org/stc/SR00408NY): Installation of Airwolf remote mounted engine oil filter model AFC-600. Airwolf Filter Corporation - [STC SR02487AK](https://openairdocs.org/stc/SR02487AK): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System. ADS-B Technologies, LLC - [STC SR02470AK](https://openairdocs.org/stc/SR02470AK): Installation of the L-3 Communications NGT -1000/2000/2500 ADS-B System. ADS-B Technologies, LLC - [STC SR02471AK](https://openairdocs.org/stc/SR02471AK): Installation of the L-3 Communications NGT -9000/9000R ADS-B System. ADS-B Technologies, LLC - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SH1459SW](https://openairdocs.org/stc/SH1459SW): Long nose single place cabin, without doors, included in a modified center frame, modified controls to accommodate new cabin/center frame, modified hydraulic system, oil system, and instrument panel, modified tail boom and delete synchronized elevator to add a modified fuel system. Scott's Bell 47 Inc - [STC SH161WE](https://openairdocs.org/stc/SH161WE): Installation of exhaust muffler assembly. Scott's Bell 47 Inc - [STC SH166GL](https://openairdocs.org/stc/SH166GL): Installation of Low Fuel Warning System. Scott's Bell 47 Inc - [STC SH1710GL](https://openairdocs.org/stc/SH1710GL): Install fixed elevator in lieu of synchronized elevator. Scott's Bell 47 Inc - [STC SH382SW](https://openairdocs.org/stc/SH382SW): Eligible only on Bell 47 series with open tail booms. Installation of sign per Kitz Kopter's Drawing KK-101 dated 10/14/64. Scott's Bell 47 Inc - [STC SR09321RC](https://openairdocs.org/stc/SR09321RC): Installation of Improved Main Rotor Grips and Matching Adapter Nut. Scott's Bell 47 Inc - [STC SR09346RC](https://openairdocs.org/stc/SR09346RC): Installation of main rotor blade grip with modified root radius and matching adapter in accordance with Helicopter Tech, Inc., Drawing List R47-120-252-1000, Revision IR, dated May 15, 2002, or later Federal Aviation Administration (FAA) approved revision. Helicopter Tech Inc - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SA4172NM](https://openairdocs.org/stc/SA4172NM): Installation of Aviation Development oil filter. Aviation Development Corporation - [STC SH657NW](https://openairdocs.org/stc/SH657NW): Installation of Allison 250-C18A, -C18C, -C20, -C20B engine and related changes. Siam Hiller Holdings Inc - [STC SA00680SE](https://openairdocs.org/stc/SA00680SE): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer. Electronics International - [STC SR01430LA](https://openairdocs.org/stc/SR01430LA): Installation of Stainless Steel Skid shoes. Papas Gary Los Angeles Laboratories Inc - [STC SA489EA](https://openairdocs.org/stc/SA489EA): Installation of ARP Inc. carburetor ice detection system. Aircraft & Rotorcraft Products (ARP) Inc - [STC SH1343SO](https://openairdocs.org/stc/SH1343SO): Installation of Utah Research& Development's Model 124BC101 airborne battery charger. Aviall Services, Inc. Lists 47 Series - [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches. Aero Manufacturing Inc - [STC SA00238SE](https://openairdocs.org/stc/SA00238SE): Installation of Aviation Development Corporation's sump mounted chip detector. Aviation Development Corporation - [STC SA1626NM PAGE 1](https://openairdocs.org/stc/SA1626NM%20PAGE%201): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SH8441SW](https://openairdocs.org/stc/SH8441SW): Installation of a float assembly. Aero Products, Inc - [STC SA2844CE](https://openairdocs.org/stc/SA2844CE): Installation of a plastic cap enclosure over the anti-collision strobe light system. Air Transport Inc - [STC SH5142NM](https://openairdocs.org/stc/SH5142NM): Install rotary atomizers, Simplex model 10060, on Simplex spray booms approved under on the the STC's SH787NW, SH856NW, SH889NW, or SH891NW. Simplex Manufacturing Company - [STC SA2350NM PAGE 1](https://openairdocs.org/stc/SA2350NM%20PAGE%201): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International - [STC SH370GL](https://openairdocs.org/stc/SH370GL): Installation of Facet Enterprises, Inc. engine lubrication system scavenge filter. Facet Filter Products - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International - [STC SA3862NM PAGE 1](https://openairdocs.org/stc/SA3862NM%20PAGE%201): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories. Electronics International - [STC SA4173NM](https://openairdocs.org/stc/SA4173NM): Installation of Simplex Model 7600 modular electrical system. (47G-5 WITH 12 VOLT SYSTEM). Simplex Manufacturing Company. Lists 47 Series - [STC SH4173NM](https://openairdocs.org/stc/SH4173NM): Installation of Simplex Model 7600 modular electrical system. (US ARMY OH-13E M74A). Simplex Manufacturing Company - [STC SH2945NM](https://openairdocs.org/stc/SH2945NM): Addition of a twist grip on the cyclic pitch stick to provide hand operated yaw control. Narad James L - [STC SH3351NM](https://openairdocs.org/stc/SH3351NM): Addition of a twist grip on the cyclic pitch stick to provide a hand operated yaw control. Narad James L. Lists 47 Series - [STC SH2277NM](https://openairdocs.org/stc/SH2277NM): Installation of AC-OF-105A oil filter. Rio Verde Heli Inc - [STC SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201): Installation of electronics International Digital Volt/Amp Gauges and Accessories. Electronics International - [STC SH2247NM](https://openairdocs.org/stc/SH2247NM): Installation of Jasco Model 7145T alternator. Wardle J F - [STC SH507GL](https://openairdocs.org/stc/SH507GL): Installation of modified tail rotor gearbox using original installation hardware and components. Helicopters, Inc - [STC SH856NW](https://openairdocs.org/stc/SH856NW): Installation of Simplex Model 4800 spray system. Simplex Manufacturing Co - [STC SH888NW](https://openairdocs.org/stc/SH888NW): Installation of a Simplex Model 5750 spray system. Simplex Manufacturing Co All 123: https://openairdocs.org/model/bell-47g-5a/stcs.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.