# Bell-Intermountain 47G-3B-1

- Type: Aircraft model (FAA registry)
- Registry code: 1181027
- Manufacturer (registry): BELL-INTERMOUNTAIN
- Model: 47G-3B-1
- 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: 1
- Page: https://openairdocs.org/model/bell-intermountain-47g-3b-1

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 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023
- [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 72-02-05](https://openairdocs.org/ad/72-02-05): Control Rod Assembly · Scotts-Bell 47 47G, 47G-2, 47G-2A and 11 more. Effective Feb 22, 1972
- [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 67-26-04](https://openairdocs.org/ad/67-26-04): Altimeters · Bell Helicopter Textron Canada 206A, 150G, 172H (USAF T-41A) and 36 more
- [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 (1)

- [N31052](https://openairdocs.org/aircraft/N31052): [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 1964, S/N 2934

## NTSB investigations (2)

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 FTW91DPG12](https://openairdocs.org/ntsb/FTW91DPG12), Jun 1, 1991: Bell 47-G3B1 (N31052), Colt, AR, destroyed. Probable cause: LOSS OF ENGINE POWER FOR AN UNDETERMINED REASON. A FACTOR WAS THE UNSUITABLE TERRAIN.
- [NTSB MKC73FCD68](https://openairdocs.org/ntsb/MKC73FCD68), Jun 4, 1973: Bell 47G-3B (N65036), Clarinda, IA, destroyed

## FAA accident and incident reports (2)

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 19910531018589A](https://openairdocs.org/incident/19910531018589A), May 31, 1991: Bell 47G3B1 (N31052), Colt, AR, Destroyed. Skid caught a levee on spray run. Helicopter rolled several times and burned. Blamed power loss. Unconfirmed.
- [Accident 19730604017159A](https://openairdocs.org/incident/19730604017159A), Jun 4, 1973: Bell 47G3B1 (N65036), Clarinda, IA, Destroyed. Dnwnd turn,full load,settling with pwr,fell into cemetery.

## Service difficulty reports (38)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2011FA0000333](https://openairdocs.org/sdr/2011FA0000333), May 24, 2011: LINE. LOOSE. (PC) PNEUMATIC LINE CAME LOOSE AT THE FCU CAUSING ENGINE SPOOL DOWN IN FLIGHT. NUMERIOUS CSL HAVE BEEN ISSUED ON THIS TOPIC, BUT SEEM NOT TO BE BEING FOLLOWED. 
- [SDR 2005FA0001309](https://openairdocs.org/sdr/2005FA0001309), Sep 3, 2005: GRIP. CRACKED. MAIN ROTOR GRIP, CRACK IN THREADS. (K)
- [SDR AU510001577](https://openairdocs.org/sdr/AU510001577), Aug 6, 2005: SHAFT. WRONG PART. TAIL ROTOR GEARBOX PINION SHAFT WORN AND INCORRECT PART. BELL 47 SI 428 CALLED FOR REPLACEMENT OF P/N 47-645-205-1 WITH P/N 47-645-205-3 SHAFT.
- [SDR AUS20040411](https://openairdocs.org/sdr/AUS20040411), Apr 5, 2004: BRACKET. MISSING. (AUS) DUAL TAIL ROTOR CONTROL PEDAL SYSTEM INTERFERENCE BRACKET NOT FITTED. AD/BELL47/69 REQUIRES THE BRACKET TO BE FITTED TO DUALCONTROL BELL/AGUSTA 47 SERIES 
- [SDR 2004FA0000067](https://openairdocs.org/sdr/2004FA0000067), Dec 23, 2003: HOUSING. CRACKED. CRACK-LIKE INDICATION DETECTED AT FLUID HOLE AREA. FP INSPECTION USED.
- [SDR 2004FA0000063](https://openairdocs.org/sdr/2004FA0000063), Dec 23, 2003: GRIP. CRACKED. CRACK LIKE INDICATION DETECTED IN THREAD AREA WHICH EXCEEDS 10 PERCENT. EDDY CURRENT INSPECTION USED.
- [SDR 2004FA0000062](https://openairdocs.org/sdr/2004FA0000062), Dec 23, 2003: MOUNT. CRACKED. CRACK-LIKE INDICATIONS DETECTED ON WELD EDGES-AREAS IDENTIFIED. FLUORESCENT AND MT INSPECTION USED.
- [SDR 2004FA0000061](https://openairdocs.org/sdr/2004FA0000061), Dec 23, 2003: MASTER ROD. CRACKED. CRACK-LIKE INDICATION DETECTED BETWEEN WELD AND HOLE 2 AND END OF ROD. FLUORESCENT PENETRANT INSPECTION AND MT INSPECTION USED.
- [SDR 2003FA0000072](https://openairdocs.org/sdr/2003FA0000072), Dec 12, 2002: GRIP. CRACKED. CRACK LIKE INDICATION ON 9TH THREAD INBOARD WHICH EXCEEDS 15 PERCENT. IAW AD. PART REJECTED AND RED TAGGED BY REPAIR STATION. OPERATOR STATED PART WAS PURCHASED
- [SDR AUS20020344](https://openairdocs.org/sdr/AUS20020344), Apr 11, 2002: HUB. CRACKED. (AUS) MAIN ROTOR HUB CRACKED IN AREA OF BEARING SPINDLE RADIUS. FOUND DURING INSPECTION IAW AD/BELL47/72 A2.
- [SDR 20010319CW006](https://openairdocs.org/sdr/20010319CW006), Feb 16, 2001: CLUTCH. DAMAGED. AIRCRAFT IN CRUISE AT 300 FT AGL CLUTCH SLIPPED AUTOROTATION PERFORMED DISASSEMBLED FOUND PARTIAL CONTACT OF CLUTCH/DRUM FACE. DRUM AT MAX LIMITS. MORE CAUTIOUS
- [SDR 99ZZZX4106](https://openairdocs.org/sdr/99ZZZX4106), Sep 27, 1999: FUEL CELL. CONTAMINATED. THE REFUELING TRUCK HOSE INTERNALLY DECOMPOSED LEACHING A GUM-LIKE RESIN INTO FUEL WITHIN THE HOSE. THE FUEL, WHEN PUMPED INTO AIRCRAFT'S FUEL TANK, WAS THEN FE
- [SDR AU981526](https://openairdocs.org/sdr/AU981526), Oct 26, 1998: HOOK. MALFUNCTIONED. (AUS) CARGO HOOK ELECTRIC RELEASE INTERMITTENT IN OPERATION. DURING AN EMERGENCY LOAD RELEASE THE HOOK DID NOT OPEN AND THE AIRCRAFT CRASHED INTO THE GROUND. AI
- [SDR 98ZZZX3543](https://openairdocs.org/sdr/98ZZZX3543), Sep 1, 1998: BEARING. MISINSTALLED. BEARING FAILED AFTER INCORRECT INSTALL. INSP OF WHAT APPEARED TO BE EXCESS BACKLASH ON THE 47-620-497-1 FAN DRIVE GEAR ASSY. UPON REMOVAL OF FAN DRIVE QUILL ASS
- [SDR 98ZZZX3311](https://openairdocs.org/sdr/98ZZZX3311), Aug 20, 1998: GEAR. FRACTURED. ENGINE FAILED WITHOUT WARNING. UPON INVESTIGATION, FOUND TIMING GEAR FRACTURED STOPPING THE MAGS. SUBMITTER STATED SUPPLIER REPORTED THEY HAVE HAD AT LEAST 5 OF
- [SDR AU980259](https://openairdocs.org/sdr/AU980259), Mar 3, 1998: STUD. FAILED. (AUS) NR 5 CYLINDER HOLD DOWN STUDS FAILED.
- [SDR AU980258](https://openairdocs.org/sdr/AU980258), Feb 1, 1998: PIN. DAMAGED. (AUS) MAIN ROTOR HUB BEARING PINS DAMAGED DUE TO MAIN ROTOR STRIKE. BEARINGS WERE ALSO UNSERVICEABLE. FOUND DURING STRIP OF MAIN ROTOR HUB FOR COMPLIANCE WITH A
- [SDR AU971354](https://openairdocs.org/sdr/AU971354), Oct 23, 1997: BLADE. SEPARATED. (AUS) TAIL ROTOR BLADE TIP WEIGHT SEPARATED.
- [SDR AU971113](https://openairdocs.org/sdr/AU971113), May 23, 1997: BEARING. WORN. (AUS) COLLECTIVE LEVER FORWARD BEARING WORN. PERSONNEL/MAINTENANCE ERROR.
- [SDR AU971106](https://openairdocs.org/sdr/AU971106), May 23, 1997: BEARING. WORN. (AUS) LATERAL CYCLIC TORQUE TUBE FORWARD SUPPORT BEARING WORN.
- [SDR AU970597](https://openairdocs.org/sdr/AU970597), May 16, 1997: INDICATOR. FAULTY. (AUS) FUEL GAUGES FAULTY - PERSONNEL/MAINTENANCE ERROR
- [SDR AU970596](https://openairdocs.org/sdr/AU970596), May 16, 1997: INERTIA REEL. FAULTY. (AUS) SEAT BELT INERTIA REEL FAULTY - PERSONNEL/MAINTENANCE ERROR
- [SDR AU970595](https://openairdocs.org/sdr/AU970595), May 16, 1997: CABIN. FAULTY. (AUS) SUSPECT CABIN RENEWED WITH NO LOG BOOK ENTRY -PERSONNEL/MAINTENANCE ERROR
- [SDR AU970594](https://openairdocs.org/sdr/AU970594), May 16, 1997: TACHOMETER. WRONG PART. (AUS) INCORRECT TACHOMETER FITTED - PERSONNEL/MAINTENANCE ERROR - UNAPPROVED PART
- [SDR AU970593](https://openairdocs.org/sdr/AU970593), May 16, 1997: TOOLBOX. UNAPPROVED. (AUS) TOOLBOX MOUNTED IN TAIL BOOM - PERSONNEL/MAINTENANCE ERROR -UNAPPROVED PART
- [SDR AU970592](https://openairdocs.org/sdr/AU970592), May 16, 1997: FUEL SHUTOFF. DISCONNECTED. (AUS) FUEL CUTOFF DISCONNECTED
- [SDR AU970591](https://openairdocs.org/sdr/AU970591), May 16, 1997: EXTINGUISHER. FAULTY. (AUS) FITMENT OF FIRE EXTINGUISHER NOT ENTERED IN LOG BOOKS
- [SDR AU970590](https://openairdocs.org/sdr/AU970590), May 16, 1997: CONTROLLER. SEIZED. (AUS) CARBURETTOR HEAT CONTROL SEIZED - PERSONNEL/MAINTENANCE ERROR
- [SDR AU970589](https://openairdocs.org/sdr/AU970589), May 16, 1997: ELT. WRONG PART. (AUS) INCORRECT ELT FITTED - PERSONNEL/MAINTENANCE ERROR - UNAPPROVED PART.
- [SDR AU970588](https://openairdocs.org/sdr/AU970588), May 16, 1997: TUBE. DAMAGED. (AUS) TWO STRUCTURAL TUBES DAMAGED - PERSONNEL/MAINTENANCE ERROR
- [SDR AU970587](https://openairdocs.org/sdr/AU970587), May 16, 1997: LIGHTS. MISSING. (AUS) NO LANDING LIGHTS FITTED - PERSONNEL/MAINTENANCE ERROR
- [SDR AU970586](https://openairdocs.org/sdr/AU970586), May 16, 1997: RADIO SYSTEM. UNAPPROVED. (AUS) RADIOS FITTED WITHOUT CERTIFICATION - PERSONNEL/MAINTENANCE ERROR - UNAPPROVED PART
- [SDR AU970582](https://openairdocs.org/sdr/AU970582), May 16, 1997: DATA PLATE. FAULTY. (AUS) LARGE NUMBERS OF DISCREPANCIES WERE FOUND IN RELATION TO SERIAL NUMBERS - DATA PLATE FITTED DOES NOT MATCH CASA RECORDS - SUSPECT MAJOR REBUILD CARRIED OU
- [SDR AU971112](https://openairdocs.org/sdr/AU971112), May 8, 1997: EXTINGUISHER. WRONG PART. (AUS) UNAPPROVED TYPE OF DRY POWDER FIRE EXTINGUISHER FITTED. UNAPPROVED PART.
- [SDR AU971105](https://openairdocs.org/sdr/AU971105), May 8, 1997: DATA PLATE. INCORRECT DATA. (AUS) SUSPECT INCORRECT DATA PLATE FITTED TO HELICOPTER. AIRCRAFT HAD BEEN EXTENSIVELY REBUILT IN 1989. PERSONNEL/MAINTENANCE ERROR.
- [SDR CA960530004](https://openairdocs.org/sdr/CA960530004), May 13, 1996: TIE ROD. SHEARED. (CAN) THE COUNTERWEIGHT ROD SHEARED AT THE BASE OF THE SPACER AND DRAG BRACE ATTACHMENT ON THE MAIN ROTOR HEAD. THE COUNTERWEIGHT, WASHERS AND SPACER LEFT THE A
- [SDR AU960299](https://openairdocs.org/sdr/AU960299), Mar 15, 1996: PISTON. WORN. (AUS) ALL SIX CYLINDERS FOUND TO HAVE EXCESSIVE WEAR TO PISTONS, RINGS AND VALVE TRAIN INCONSISTANT WITH TIME SINCE OVERHAUL - SUSPECTCAUSED BY UNREPORTED ENGIN
- [SDR AU960152](https://openairdocs.org/sdr/AU960152), Feb 2, 1996: BLADE. FAILED. (AUS) COMPRESSOR NO2/3 ROTOR ASSEMBLY BLADE FAILED - BLADES EXITED THROUGH BOTH COMPRESSOR CASE HALVES - FURTHER DAMAGE TO TURBINESECTION DUE TO FOD AND OVERTEM

## STCs that may be installed (OpenAirDocs) (142, 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 SH100WE](https://openairdocs.org/stc/SH100WE): Installation of fiberglass baggage carriers. 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 SH1152NW](https://openairdocs.org/stc/SH1152NW): Installation of the Automatic Flagman Model 135 Control Stick Grip. Air Products & Parts LLC
- [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 SH2348SW](https://openairdocs.org/stc/SH2348SW): Installation of Sprag System Kit P/N 74-612-153-1M Revision D, dated 9/17/14. Scott's Bell 47 Inc
- [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 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 SH2397SW](https://openairdocs.org/stc/SH2397SW): Installation of Ag-King 500B Spray System with 2 tanks (800 pounds total allowable), 32 foot boom on end of skid tubes and engine driven pump. Scott's Bell 47 Inc
- [STC SH279SW](https://openairdocs.org/stc/SH279SW): Modification of dual control cyclic stick into quick removable stick similar to Bell 47A stick by cutting off the stick and making an insert of 4130 steel tube to fit inside. 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 SH504GL](https://openairdocs.org/stc/SH504GL): Installation of Lycoming VO-435-A1F engine modified. Scott's Bell 47 Inc
- [STC SH605GL](https://openairdocs.org/stc/SH605GL): Removal of Avco Lycoming TV0-435-B1B Engine, Turbocharger, and related parts; and the installation. Scott's Bell 47 Inc
- [STC SH972SW](https://openairdocs.org/stc/SH972SW): Installation of copilot's rudder pedals. 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 SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. M-20 Oil Separators LLC
- [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 SA01258SE](https://openairdocs.org/stc/SA01258SE): Installation of the Automatic Flagman Dispenser Models in accordance with Automatic Flagman Master Drawing Lists specified in attached AML, or later FAA approved revision.This STC supercedes several existing STC s as listed in the notes on the attached AML. R-S Sales 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 SA02520AT](https://openairdocs.org/stc/SA02520AT): Installation of M-20 Oil Separator, model 600-WP. M-20 Oil Separators LLC
- [STC SH102WE](https://openairdocs.org/stc/SH102WE): Installation of automatic flagman model 5. R-S Sales Inc
- [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches. Aero Manufacturing Inc
- [STC SH12CE](https://openairdocs.org/stc/SH12CE): Replace existing engine induction air filter with AC Spark Plug Filter. Brackett Aero Filters Inc
- [STC SR00849LA](https://openairdocs.org/stc/SR00849LA): Installation of a hand control device for anti-torque pedals. Chap J
- [STC SR00641SE](https://openairdocs.org/stc/SR00641SE): Installation of aerial mapping camera. Davis Richard B
- [STC SA00238SE](https://openairdocs.org/stc/SA00238SE): Installation of Aviation Development Corporation's sump mounted chip detector. Aviation Development Corporation
- [STC SH54WE](https://openairdocs.org/stc/SH54WE): Installation of modified hydraulic boost cylinder. Fortner Accessory Service Corp
- [STC SH68WE](https://openairdocs.org/stc/SH68WE): Installation of modified hydraulic boost cylinder. Fortner Accessory Service Corp
- [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

All 142: https://openairdocs.org/model/bell-intermountain-47g-3b-1/stcs.md

## PMA parts (OpenAirDocs) (331, first 50)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this model on its data sheet, so check the FAA record before relying on it. Newest first.

- [WF336342](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132710384520250602133027.0001): Filter Element, Lube. Donaldson Company Inc · PMA PQ2432CE · Replaces 038088-08, P-1050 · May 23, 2025
- [MDL TD 031851](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID115185450620250508133547.0001): VA-1A( )AndAccessories. Electronics International Inc · PMA PQ0088NM · Modification part · Apr 10, 2025
- [TA2093-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID177121250820240221142921.0001): Heli- Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Feb 7, 2024
- [TA2093-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID108288966820240221142921.0001): Heli- Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Feb 7, 2024
- [01-0790906-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110906224220220610124322.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · Jun 6, 2022
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178484550820220809130922.0001): Aviation Devices & Electronic Components LLC (Av-DEC) · PMA PQ3846SW · May 10, 2022
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134246715320220809102551.0001): Aviation Devices & Electronic Components LLC (Av-DEC) · PMA PQ3846SW · Apr 18, 2022
- [AG844000-15](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176806448920220408135809.0001): Gasket – UHF/VHF Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Feb 8, 2022
- [AG728000-52](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194555019520220408135728.0001): Gasket – Satcom Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Jan 26, 2022
- [AG627000-23](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112199849720220408135708.0001): Gasket – Marker Beacon. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Dec 15, 2021
- [R1224J](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID636966561620211209184317.0001): Alternator Controller (Voltage Regulator). Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces J12M24SP · Dec 1, 2021
- [AG358000-08](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168954402320220408135822.0001): Gasket – ELT Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Nov 17, 2021
- [AG627000-12](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID160428116720220408140247.0001): Gasket – Marker Beacon Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Nov 17, 2021
- [AG843000-17](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID986028581320211110110520.0001): Gasket-UHF/VHF Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Aug 9, 2021
- [SB47-645-269-001](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID102629512720210617201001.0001): Shaft, Tail Rotor,             90° Gearbox. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-645-269-001 · May 10, 2021
- [SB47-722-270-021](https://drs.faa.gov/browse/excelExternalWindow/5B1EC43BD253F907862586290049EB9A.0001): Cable Assembly, Anti-Torque Controls, Aft. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-722-270-1 · Nov 19, 2020
- [AG822000-03](https://drs.faa.gov/browse/excelExternalWindow/25D416C8B528F4988625859F003C440E.0001): Gasket - TCAS Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · May 31, 2020
- [SB47-120-014-023](https://drs.faa.gov/browse/excelExternalWindow/2B4551339DEE0F7E86258596003BF2A1.0001): Split Ring Assy - Rotor Hub. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-120-014-023 · Apr 20, 2020
- [AG843000-17](https://drs.faa.gov/browse/excelExternalWindow/44F91AF19B0D8D4586258591003A1785.0001): Gasket - UHF/VHF Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Jan 1, 2020
- [SB47-722-269-029](https://drs.faa.gov/browse/excelExternalWindow/8ECFCFBA614E15CC862585700041336C.0001): Cable Assembly, Anti-Torque Controls, Fwd.. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-722-269-029 · Oct 31, 2019
- [AG843000-15](https://drs.faa.gov/browse/excelExternalWindow/445335953945E98886258560003BF2F7.0001): Gasket - VHF Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Aug 18, 2019
- [AG247000-04](https://drs.faa.gov/browse/excelExternalWindow/F4D9B388DAECF53586258553004D4A85.0001): Gasket - L-Band Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Jun 25, 2019
- [103650-6](https://drs.faa.gov/browse/excelExternalWindow/0A0B0368BF5EFCBA86258553003F9706.0001): Manual Hydraulic Servo Cylinder. Fortner Accessory Service Corporation · PMA PQ1926NM · Modification part · Jun 5, 2019
- [SB47-644-232-009](https://drs.faa.gov/browse/excelExternalWindow/5ABFDB43305F5AA0862583C2006D1276.0001): Shaft, Tail Rotor Drive, Assy of. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-644-232-009 · Dec 6, 2018
- [SB47-644-232-009](https://drs.faa.gov/browse/excelExternalWindow/1E5D8C47929D6BA686258439006DEF9D.0001): Shaft, Tail Rotor Drive, Assy of. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-644-232-009 · Dec 6, 2018
- [SB 910](https://drs.faa.gov/browse/excelExternalWindow/C51C6440A1CAE56586258295006CFC82.0001): Assembly, Barrier Air Filter Box. Cascade Aircraft Conversions LLC · PMA PQ2352NM · Replaces SB 920 · Mar 28, 2018
- [SB47-722-290-021](https://drs.faa.gov/browse/excelExternalWindow/6C33549C73CE6AF4862581F50058087B.0001): Cable, Assy of, Flight Control. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-722-290-001, 47-722-290-021… · Nov 21, 2017
- [SB47-725-870-101](https://drs.faa.gov/browse/excelExternalWindow/63A450EC84D7FBA9862582A60071854B.0001): Rod Assembly, Upper Lateral Cyclic Control. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-725-870-1 · Oct 9, 2017
- [74-140-134-1](https://drs.faa.gov/browse/excelExternalWindow/72D6825F249AED68862581980061C1C5.0001): Clamp, Stabilizer, Dampener Frame. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-140-134-1, 47-140-134-101 · Aug 27, 2017
- [74-140-134-1M](https://drs.faa.gov/browse/excelExternalWindow/27344C4C20A24618862581980061C085.0001): Clamp, Stabilizer, Dampener Frame. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-140-134-1, 47-140-134-101 · Aug 27, 2017
- [SB47-645-239-103](https://drs.faa.gov/browse/excelExternalWindow/D655D6EEF6882A958625818B0060C409.0001): Bearing- Tail Rotor Drive Shaft. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-645-239-1, 47-645-239-101 · Aug 16, 2017
- [SB47-620-629-007](https://drs.faa.gov/browse/excelExternalWindow/BE552AB0033637148625810100558130.0001): Bearing- Tail Rotor Drive Sleeve. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-620-629-7 · Mar 26, 2017
- [10-176487-122](https://drs.faa.gov/browse/excelExternalWindow/4C8B9680F91F275D862581020079419B.0001): Starting Vibrator, S-1200 Series, 12 Volts DC. Continental Motors Inc · PMA PQ1269CE · Replaces 10-176487-122 · Feb 16, 2017
- [10-357487-242](https://drs.faa.gov/browse/excelExternalWindow/04A9640863B764888625810200794EF8.0001): Starting Vibrator, S-1200 Series, 24 Volts DC. Continental Motors Inc · PMA PQ1269CE · Replaces 10-357487-242 · Feb 16, 2017
- [SB47-350-009-007](https://drs.faa.gov/browse/excelExternalWindow/013E3DED6762780286258045006E45F4.0001): Cross Tube Assembly. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-350-009-007 · Oct 3, 2016
- [SB47-439212](https://drs.faa.gov/browse/excelExternalWindow/BBBA052F6B4459F58625801900506DA2.0001): Fuel Level Tank Unit. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 439212 · Aug 17, 2016
- [SB47-500-011-003](https://drs.faa.gov/browse/excelExternalWindow/E2BAB63CAADF98C68625800A00525D5B.0001): Tube Assembly. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-500-011-3 · Aug 4, 2016
- [SB47-500-011-001](https://drs.faa.gov/browse/excelExternalWindow/DA1122FF0F70847A8625800A00525D53.0001): Cross Tube Assy., Heavy Duty Kit. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-500-011-1 · Aug 4, 2016
- [SB47-500-011-007](https://drs.faa.gov/browse/excelExternalWindow/7D55E9FBA62473D68625800A00525D61.0001): Tube Assembly. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-500-011-3 · Aug 4, 2016
- [SB47-J-5736-13](https://drs.faa.gov/browse/excelExternalWindow/05F9B0E48CE00A578625800A0058634E.0001): Mount. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces J-5736-13 · Aug 4, 2016
- [SB47-660-3132-1](https://drs.faa.gov/browse/excelExternalWindow/D90190398493754A86257FEE0060286E.0001): Coupling. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 660-3132-1 · Jul 6, 2016
- [SB47-660-2354-2](https://drs.faa.gov/browse/excelExternalWindow/17D27E5AD63E009686257FEE00602934.0001): N2 Tach Generator Shear Shaft. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 660-2354-2 · Jul 6, 2016
- [SB47-612-171-123C](https://drs.faa.gov/browse/excelExternalWindow/8056CAF6CA7EF7CA86257FDB005C53DE.0001): Mount Assembly - Engine Support. Scott's-Bell 47 Inc. · PMA PQ4085CE · Replaces 47-612-171-123 · Jun 21, 2016
- [RA-21452](https://drs.faa.gov/browse/excelExternalWindow/D5136E780FF2D72586257FE700784172.0001): Brush, Assembly .25 inch x .375 inch. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 7025480-001, 718854 · Jun 7, 2016
- [RA-21450](https://drs.faa.gov/browse/excelExternalWindow/C3E07C327C4EA41A86257FE700784072.0001): Brush, Assembly .25 inch x .25 inch. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 7025480-004, 717471 · Jun 7, 2016
- [RA-21454](https://drs.faa.gov/browse/excelExternalWindow/C2D58CF03751048386257FE70078425D.0001): Spring, Brush. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 7024508-001 · Jun 7, 2016
- [RA-81D13-1](https://drs.faa.gov/browse/excelExternalWindow/A9191FD7F8CE1B6086257FE7007865C9.0001): Capacitor. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 81D13-1 · Jun 7, 2016
- [CD21500](https://drs.faa.gov/browse/excelExternalWindow/8F32E4D767332A7C86257FE700784304.0001): Ignition, Universal. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 07D97, 08D50, 17E24, 19E24, 81D12… · Jun 7, 2016
- [CD21600](https://drs.faa.gov/browse/excelExternalWindow/8AF01437E0E3CD7D86257FE7007845B7.0001): Heater Control Switch. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 18774-00, 487898, 587899, S392-1 · Jun 7, 2016
- [RA-21453](https://drs.faa.gov/browse/excelExternalWindow/84366C716504422286257FE70078420F.0001): Brush, .25 inch x .375 inch. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 7024512-001, 718853 · Jun 7, 2016

All of them: https://openairdocs.org/model/bell-intermountain-47g-3b-1/pma.md

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1): 83 registered aircraft, registry code 1181028
- [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1): 3 registered aircraft, registry code 118103A
- [Bell-Huddleston And Wilson 47G-3B1](https://openairdocs.org/model/bell-huddleston-and-wilson-47g-3b1): 1 registered aircraft, registry code 118103H
- [Bell-Yellow Bird 47G-3B-1](https://openairdocs.org/model/bell-yellow-bird-47g-3b-1): 0 registered aircraft, registry code 118103J

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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.