# Hiller UH-12A - Type: Aircraft model (FAA registry) - Registry code: 4360104 - Manufacturer (registry): HILLER - Model: UH-12A - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Reciprocating - Seats: 4 - Weight class: Up to 12,499 lb - Cruise speed: 63 mph - Certification: Type certificated - Data sheet: [TCDS 6H1](https://openairdocs.org/tcds/6H1) (OpenAirDocs) - Holder: Siam Hiller Holdings Inc. - Registered aircraft: 16 - Page: https://openairdocs.org/model/hiller-uh-12a 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 2015-20-51](https://openairdocs.org/ad/2015-20-51): Hiller UH-12, UH-12A, UH-12B and 6 more - [AD 2000-24-21](https://openairdocs.org/ad/2000-24-21): Control System Linkage · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Jan 10, 2001 - [AD 97-20-15](https://openairdocs.org/ad/97-20-15): Outboard Tension-Torsion Bar Pin · Hiller UH-12A, UH-12B, UH-12C and 2 more. Effective Nov 12, 1997 - [AD 97-10-16](https://openairdocs.org/ad/97-10-16): Blade Spar Tube and Cuff Inspection · Allison 250-C20/250-C20B engine (Siam Hiller Holdings STC SH177WE or SH178WE). Effective Jun 27, 1997 - [AD 83-25-02](https://openairdocs.org/ad/83-25-02): Main Rotor Blade Doublers · Allison 250-C20/250-C20B engine (Siam Hiller Holdings STC SH177WE). Effective Dec 29, 1983 - [AD 81-18-02](https://openairdocs.org/ad/81-18-02): Tail Rotor Skin Cracks · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Sep 10, 1981 - [AD 81-17-03](https://openairdocs.org/ad/81-17-03): Main Transmission · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Aug 24, 1981 - [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 73-20-03](https://openairdocs.org/ad/73-20-03): Main Rotor Hub · Hiller UH-12, UH-12A, UH-12B and 4 more. Effective Oct 30, 1973 - [AD 71-25-08](https://openairdocs.org/ad/71-25-08): Inspect Main Rotor Blades · Hiller UH-12, UH-12A, UH-12B and 6 more. Effective Dec 14, 1971 - [AD 63-04-02](https://openairdocs.org/ad/63-04-02): Tail Rotor Blade · Hiller UH-12, UH-12A, UH-12B and 1 more. Effective Feb 12, 1963 - [AD 62-03-01](https://openairdocs.org/ad/62-03-01): Tail Rotor · Hiller UH-12A and UH-12B. Effective Jan 30, 1962 - [AD 59-25-03](https://openairdocs.org/ad/59-25-03): Wobble Plate Screws · Hiller UH-12, UH-12A, UH-12B and 3 more - [AD 59-05-05](https://openairdocs.org/ad/59-05-05): Cyclic Control Scissor Casting · Hiller UH-12, UH-12A, UH-12B and 3 more - [AD 58-02-03](https://openairdocs.org/ad/58-02-03): Carburetor Mixture Control Removal · Hiller UH-12, UH-12A, UH-12B and 2 more - [AD 56-27-02](https://openairdocs.org/ad/56-27-02): Engine Mount Welds · Hiller UH-12, UH-12A and UH-12B - [AD 56-09-01](https://openairdocs.org/ad/56-09-01): Tail Rotor Torsion Bar · Hiller UH-12, UH-12A, UH-12B and 1 more - [AD 55-19-01](https://openairdocs.org/ad/55-19-01): Tail Boom Rear Bulkhead · Hiller UH-12, UH-12A and UH-12B - [AD 53-24-02](https://openairdocs.org/ad/53-24-02): Tail Rotor Pitch Change Rod · Hiller UH-12, UH-12A and UH-12B - [AD 53-12-01](https://openairdocs.org/ad/53-12-01): Horizontal Stabilizer Spar · Hiller UH-12, UH-12A and UH-12B - [AD 53-09-03](https://openairdocs.org/ad/53-09-03): Outboard Tension Bar Pins · Hiller UH-12, UH-12A and UH-12B - [AD 52-29-01](https://openairdocs.org/ad/52-29-01): Tail Rotor Drive Slip Joint Assembly Inspection · Hiller UH-12, UH-12A and UH-12B - [AD 52-01-08](https://openairdocs.org/ad/52-01-08): Collective Pitch Incidence Arms · Hiller UH-12, UH-12A and UH-12B - [AD 51-20-03](https://openairdocs.org/ad/51-20-03): Collective Pitch Ballast System Bracket · Hiller UH-12 and UH-12A 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 77-07-05 R1](https://openairdocs.org/ad/77-07-05-R1) (historical): Control Rotor Blade Spar Tube and Cuff · Hiller UH-12, UH-12A, UH-12B and 3 more. Effective Jun 20, 1977 - [AD 77-07-05](https://openairdocs.org/ad/77-07-05) (historical): Control Rotor Blade Spar Tube and Cuff · Hiller UH-12, UH-12A, UH-12B and 3 more. Effective Jun 20, 1977 ## Registered aircraft (16) - [N162DL](https://openairdocs.org/aircraft/N162DL): [Lewkowicz Augusto D](https://openairdocs.org/faa-owner/LEWKOWICZ%20AUGUSTO%20D), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), S/N 224 - [N162M](https://openairdocs.org/aircraft/N162M): [Costa James Joseph](https://openairdocs.org/faa-owner/COSTA%20JAMES%20JOSEPH), [Tulare, CA](https://openairdocs.org/faa-place/CA/Tulare), built 1962, S/N 238 - [N212W](https://openairdocs.org/aircraft/N212W): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), S/N 237 - [N263SS](https://openairdocs.org/aircraft/N263SS): [Madden Russell E](https://openairdocs.org/faa-owner/MADDEN%20RUSSELL%20E), [Graford, TX](https://openairdocs.org/faa-place/TX/Graford), S/N 265 - [N330M](https://openairdocs.org/aircraft/N330M): [Lacy Glenn M](https://openairdocs.org/faa-owner/LACY%20GLENN%20M), [Bedford, VA](https://openairdocs.org/faa-place/VA/Bedford), S/N 287 - [N4254A](https://openairdocs.org/aircraft/N4254A): [James David R](https://openairdocs.org/faa-owner/JAMES%20DAVID%20R), [Wayne, MI](https://openairdocs.org/faa-place/MI/Wayne), built 1950, S/N 229 - [N4733C](https://openairdocs.org/aircraft/N4733C): [Taz Air Service Inc](https://openairdocs.org/faa-owner/TAZ%20AIR%20SERVICE%20INC), [Middletown, DE](https://openairdocs.org/faa-place/DE/Middletown), S/N 260 - [N4977E](https://openairdocs.org/aircraft/N4977E): [Wyllie Ashton R J Trustee](https://openairdocs.org/faa-owner/WYLLIE%20ASHTON%20R%20J%20TRUSTEE), [Thornton, NH](https://openairdocs.org/faa-place/NH/Thornton), built 1951, S/N 254 - [N57U](https://openairdocs.org/aircraft/N57U): [Patten Jeffery D](https://openairdocs.org/faa-owner/PATTEN%20JEFFERY%20D), [Rapid City, SD](https://openairdocs.org/faa-place/SD/Rapid%20City), S/N 286 - [N613HL](https://openairdocs.org/aircraft/N613HL): [Hood Paul D](https://openairdocs.org/faa-owner/HOOD%20PAUL%20D), [Broken Arrow, OK](https://openairdocs.org/faa-place/OK/Broken%20Arrow), S/N 283 - [N6331D](https://openairdocs.org/aircraft/N6331D): [Gilbreath Tony C](https://openairdocs.org/faa-owner/GILBREATH%20TONY%20C), [Olustee, OK](https://openairdocs.org/faa-place/OK/Olustee), S/N 213 - [N69085](https://openairdocs.org/aircraft/N69085): [Clarcq Richard D](https://openairdocs.org/faa-owner/CLARCQ%20RICHARD%20D), [Cohocton, NY](https://openairdocs.org/faa-place/NY/Cohocton), S/N 103 - [N8109H](https://openairdocs.org/aircraft/N8109H): [Ragan Randall R](https://openairdocs.org/faa-owner/RAGAN%20RANDALL%20R), [Sarasota, FL](https://openairdocs.org/faa-place/FL/Sarasota), built 1949, S/N 109 - [N8117H](https://openairdocs.org/aircraft/N8117H): [Williams Charles S](https://openairdocs.org/faa-owner/WILLIAMS%20CHARLES%20S), [Anacoco, LA](https://openairdocs.org/faa-place/LA/Anacoco), built 1949, S/N 117 - [N8178H](https://openairdocs.org/aircraft/N8178H): [Rotor Wing Nuts LLC](https://openairdocs.org/faa-owner/ROTOR%20WING%20NUTS%20LLC), [Kansas City, MO](https://openairdocs.org/faa-place/MO/Kansas%20City), built 1950, S/N 178 - [N8180H](https://openairdocs.org/aircraft/N8180H): [Pockrus Pat B](https://openairdocs.org/faa-owner/POCKRUS%20PAT%20B), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1950, S/N 180 ## NTSB investigations (35) 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 CEN23LA383](https://openairdocs.org/ntsb/CEN23LA383), Aug 27, 2023: Hiller UH-12A (N8178H), Mosby, MO, substantial damage. Probable cause: The pilot’s failure to maintain adequate rotor rpm which resulted in a loss of control and impact with terrain. - [NTSB CEN17LA375](https://openairdocs.org/ntsb/CEN17LA375), Sep 11, 2017: Hiller UH 12A (N2686), Griffith, IN, substantial damage. Probable cause: The loss of tail rotor thrust due to a failed tail rotor driveshaft, which resulted in a loss of tail rotor control and a hard landing. - [NTSB ERA13LA308](https://openairdocs.org/ntsb/ERA13LA308), Jun 29, 2013: Hiller UH-12A (N6331D), Florence, AL, substantial damage. Probable cause: The student pilot’s failure to maintain control of the helicopter while landing, which resulted in a tail rotor ground strike and collision with terrain. - [NTSB ERA10CA262](https://openairdocs.org/ntsb/ERA10CA262), May 9, 2010: Hiller UH12 (N116S), Sarasota, FL, substantial damage. Probable cause: The pilot's delayed remedial action to maintain main rotor rpm, which resulted in a loss of lift and hard landing. - [NTSB ATL07LA045](https://openairdocs.org/ntsb/ATL07LA045), Feb 24, 2007: Hiller UH-12A (N8180H), Bethlehem, GA, substantial damage, 2 fatal. Probable cause: The pilot's failure to maintain adequate rotor rpm, which resulted in an attempted autorotation and in-flight collision with trees. Contributing to the severity of the accident was the pilot… - [NTSB ATL99LA131](https://openairdocs.org/ntsb/ATL99LA131), Sep 11, 1999: Hiller UH-12A (N212W), Satartia, MS, substantial damage. Probable cause: The pilot's failure to maintain control of the helicopter while on approach which resulted in the uncontrolled collision with the ground. A factor was the pilot's physiological condition. - [NTSB SEA95LA220](https://openairdocs.org/ntsb/SEA95LA220), Sep 17, 1995: Hiller UH-12A (N8180H), Bonners Ferry, ID, substantial damage. Probable cause: THE FLIGHT INSTRUCTOR'S MISJUDGING HIS FLARE DURING A SIMULATED AUTOROTATION. - [NTSB ATL88LA232](https://openairdocs.org/ntsb/ATL88LA232), Aug 20, 1988: Hiller UH-12A (N4828E), Paducah, KY, substantial damage - [NTSB LAX84FA106](https://openairdocs.org/ntsb/LAX84FA106), Dec 16, 1983: Hiller UH-12A (N8108H), Van Nuys, CA, substantial damage - [NTSB NYC82DA087](https://openairdocs.org/ntsb/NYC82DA087), May 2, 1982: Hiller UH-12A (N116S), New Paltz, NY, substantial damage - [NTSB CHI78FEM03](https://openairdocs.org/ntsb/CHI78FEM03-139133), Oct 8, 1978: Hiller UH12A (N330M), Muskegon, MI, substantial damage - [NTSB NYC78FHM04](https://openairdocs.org/ntsb/NYC78FHM04), Sep 6, 1977: Hiller Acft UH-12C (N2686), Lincoln Park, NJ, destroyed - [NTSB SEA77DYM34](https://openairdocs.org/ntsb/SEA77DYM34), May 28, 1977: Hiller Acft UH-12C (N8108H), Albany, OR, destroyed - [NTSB LAX76FUM16](https://openairdocs.org/ntsb/LAX76FUM16), Dec 16, 1975: Hiller Acft UH-12B (N57U), San Diego, CA, substantial damage - [NTSB FTW76FPJ19](https://openairdocs.org/ntsb/FTW76FPJ19), Dec 13, 1975: Hiller Acft UH-12A (N8117H), Ada, OK, substantial damage - [NTSB ANC76AA041](https://openairdocs.org/ntsb/ANC76AA041), Sep 27, 1975: Hiller Acft UH-12A (N10172), Nome, AK, substantial damage - [NTSB SEA76FYC20](https://openairdocs.org/ntsb/SEA76FYC20), Sep 20, 1975: Hiller Acft UH-12B (N8108H), Brownsville, OR, substantial damage - [NTSB CHI74FEV49](https://openairdocs.org/ntsb/CHI74FEV49), May 1, 1974: Hiller Acft UH-12A (N7636B), Springfield, IL, substantial damage - [NTSB FTW74DPD39](https://openairdocs.org/ntsb/FTW74DPD39), Mar 30, 1974: Hiller Acft UH-12A (N8145H), Gouldbusk, TX, substantial damage - [NTSB MIA74FKA04](https://openairdocs.org/ntsb/MIA74FKA04), Sep 12, 1973: Hiller Acft UH-12A (N8151H), St Thomas, VI, substantial damage - [NTSB FTW74DPD14](https://openairdocs.org/ntsb/FTW74DPD14), Jul 22, 1973: Hiller Acft UH-12A (N8145H), Springtown, TX, substantial damage - [NTSB FTW74DPD01](https://openairdocs.org/ntsb/FTW74DPD01), Jul 13, 1973: Hiller UH-12A (N6448D), Dublin, TX, substantial damage - [NTSB MKC72FCG11](https://openairdocs.org/ntsb/MKC72FCG11), Aug 11, 1971: Hiller UH-12A (N4287C), Springfield, MO, substantial damage - [NTSB SEA71FYC42](https://openairdocs.org/ntsb/SEA71FYC42), Jun 11, 1971: Hiller UH12A (N8178H), Brooks, OR, destroyed, 1 fatal - [NTSB NYC71FHA13](https://openairdocs.org/ntsb/NYC71FHA13), Aug 30, 1970: Hiller Acft UH-12A (N10322), Fountainville, PA, substantial damage - [NTSB LAX71FUA08](https://openairdocs.org/ntsb/LAX71FUA08), Aug 4, 1970: Hiller Acft UH-12A (N2827D), Tustin, CA, substantial damage - [NTSB SEA71DWA05](https://openairdocs.org/ntsb/SEA71DWA05), Jul 11, 1970: Hiller Acft UH-12A (N8180H), Maupin, OR, substantial damage - [NTSB ANC67A0062](https://openairdocs.org/ntsb/ANC67A0062), Jun 14, 1967: Hiller UH-12A (N8180H), Fairbanks, AK, substantial damage - [NTSB OAK67A0079](https://openairdocs.org/ntsb/OAK67A0079), May 15, 1967: Hiller UH-12A (N8107H), Fresno, CA, substantial damage - [NTSB NYC67A0106](https://openairdocs.org/ntsb/NYC67A0106), Oct 13, 1966: Hiller UH-12A (N8109H), Honesdale, PA, substantial damage - [NTSB LAX66A0096](https://openairdocs.org/ntsb/LAX66A0096), Jun 6, 1966: Hiller UH-12A (N263SS), Los Angeles, CA, substantial damage - [NTSB FTW65A0095](https://openairdocs.org/ntsb/FTW65A0095), Mar 29, 1965: Hiller UH12B (N6448D), San Antonio, TX, substantial damage - [NTSB UNK65X1004](https://openairdocs.org/ntsb/UNK65X1004), Dec 13, 1964: Hiller UH12A (N6444D), Austin, TX, substantial damage - [NTSB UNK64X1649](https://openairdocs.org/ntsb/UNK64X1649), May 7, 1964: Hiller UH12A (N10172), Abilene, KS, substantial damage - [NTSB UNK64X0801](https://openairdocs.org/ntsb/UNK64X0801), Mar 4, 1964: Hiller UH12A (N162M), Van Nuys, CA, substantial damage ## FAA accident and incident reports (25) 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 20230827019679A](https://openairdocs.org/incident/20230827019679A), Aug 27, 2023: Hiller UH-12A (N8178H), Mosby, MO, Substantial damage. The pilot was unable to maintain altitude during hover taxi and the tail boom struck the ground. - [Accident 20170911019259A](https://openairdocs.org/incident/20170911019259A), Sep 11, 2017: Hiller UH-12A (N2686), Griffith, IN, Substantial damage. While performing flight instruction in N2686, the PIC lost directional control of the aircraft. This loss of control resulted in damage to the helicopter tail… - [Accident 20130629011939A](https://openairdocs.org/incident/20130629011939A), Jun 29, 2013: Hiller UH-12A (N6331D), Florence, AL, Substantial damage. Pilot was operating helicopter to load it on a tow trailer. Witness stated the helicopter was about to touchdown on the trailer surface, it began a slow drift… - [Accident 20100509033889A](https://openairdocs.org/incident/20100509033889A), May 9, 2010: Hiller UH-12A (N116S), Sarasota, FL, Substantial damage. On may 09, 2010, at 1900 eastern time, a Hiller UH-12A, aircraft, registration N116S, experienced the loss operational control during cruise flight near… - [Accident 20070224002219A](https://openairdocs.org/incident/20070224002219A), Feb 24, 2007: Hiller UH12A (N8180H), Bethlehen, GA, Substantial damage, 2 fatal. (-23) On 02/24/2007, N8180H, helicopter, Hiller-UH12-1, with 2 pilots on board, was performing hovering maneuvers in a heavily wooded area. PIC experienced… - [Accident 19990911026809A](https://openairdocs.org/incident/19990911026809A), Sep 11, 1999: Hiller UH12A (N212W), Satartia, MS, Substantial damage. (.19) On September 11, 1999, at 1800 central daylight time, a Hiller UH-12A helicopter, N212W, collided with the ground while on approach to land, in Satartia,… - [Accident 19950916029899A](https://openairdocs.org/incident/19950916029899A), Sep 16, 1995: Hiller UH12A (N8180H), Bonners Ferry, ID, Substantial damage. Hard autorotation landing. Skid collapsed. Rotors chopped tailboom CFI misjudged flare height. Late on collective. - [Accident 19880820034309A](https://openairdocs.org/incident/19880820034309A), Aug 20, 1988: Hiller UH12A (N4828E), Paducah, KY, Substantial damage. Engine quit on climbout. Autorotated into trees. Found 50 percent water in fuel. Engine accessory case damaged. - [Accident 19850615025469A](https://openairdocs.org/incident/19850615025469A), Jun 15, 1985: Hiller UH12A (N4732C), Warm Springs, OR, Substantial damage. Mechanic failed to safety wire the nut on bottom of fuel strainer bowl. Nut backed off, let air in. Engine quit. - [Incident 19850214007449I](https://openairdocs.org/incident/19850214007449I), Feb 14, 1985: Hiller UH12A (N8107H), San Diego, CA. Cyclic control vibration damper part fell off aircraft. Break occurred at bottom of damper arm above attach point. - [Accident 19831216061399A](https://openairdocs.org/incident/19831216061399A), Dec 16, 1983: Hiller UH12A (N8108H), Van Nuys, CA, Substantial damage. Engine quit due to water in fuel. Made hard autorotation landing on a roof. Fuel cap gaskets leaked water into fuel - [Incident 19830330036259I](https://openairdocs.org/incident/19830330036259I), Mar 30, 1983: Hiller UH12A (N57U), Hayward, CA, Minor damage. Main rotor blade nicked the small diameter tailrotor drive shaft during touchdown. - [Incident 19830308016429I](https://openairdocs.org/incident/19830308016429I), Mar 8, 1983: Hiller UH12A (N8180H), Porterville, CA, Minor damage. Lack recent experience,had difficulty landing helicopter. Main rotors flexed down and severed tail rotor drive. - [Accident 19820502037979A](https://openairdocs.org/incident/19820502037979A), May 2, 1982: Hiller UH12A (N116S), Highland, NY, Substantial damage. RPM decay, struck a tree and landed hard in a apple orchard. Oil leak between engine and transmission. Oily clutch. - [Accident 19781008031179A](https://openairdocs.org/incident/19781008031179A), Oct 8, 1978: Hiller UH12A (N330M), Muskegon, MI, Substantial damage. Wind gusts to 40K. - [Accident 19770906039379A](https://openairdocs.org/incident/19770906039379A), Sep 6, 1977: Hiller UH12A (N2686), NJ, Substantial damage - [Accident 19770529016599A](https://openairdocs.org/incident/19770529016599A), May 29, 1977: Hiller UH12C (N8108H), Albany, OR, Destroyed. Flying upriver 40-50FT AGL.struck elect transmission wire,fell into river. - [Accident 19751216039439A](https://openairdocs.org/incident/19751216039439A), Dec 16, 1975: Hiller UH12C (N57U), San Diego, CA, Substantial damage. Clutch failed. - [Accident 19751213039769A](https://openairdocs.org/incident/19751213039769A), Dec 13, 1975: Hiller UH12A (N8117H), Ada, OK, Substantial damage. Plt attmptd take off from shopping center. Not heli rated. - [Accident 19750927040969A](https://openairdocs.org/incident/19750927040969A), Sep 27, 1975: Hiller UH12A (N10172), Nome, AK, Substantial damage. Lnd in soft tundra. Fuel dip stick inaccurate. - [Accident 19750920038669A](https://openairdocs.org/incident/19750920038669A), Sep 20, 1975: Hiller UH12A (N8108H), Brownsville, OR, Destroyed. Clutch pucks charred,clutch drum discolored fm overheat.t/d on rear of skid,m/r struck tailboom. - [Accident 19740501013629A](https://openairdocs.org/incident/19740501013629A), May 1, 1974: Hiller UH12A (N7636B), Springfield, IL, Substantial damage. Not rotorcraft rated. Adjusted blade trim tab improperly. Struck tail on expedited ldg.m/r hit tail. - [Accident 19740330007869A](https://openairdocs.org/incident/19740330007869A), Mar 30, 1974: Hiller UH12A (N8145H), Gouldbusk, TX, Substantial damage. Plt returng to ranch at lo alt followng coyote hunt-lost pwr drg pull up ovr pwr lines. - [Accident 19730912029749A](https://openairdocs.org/incident/19730912029749A), Sep 12, 1973: Hiller UH12C (N8151H), St Thomas, Puerto Rico, Substantial damage. Drg atmpt hold short of rwy abt 12 AGL as fwd movement began to stop lost rotor and eng RPM. - [Accident 19730722027359A](https://openairdocs.org/incident/19730722027359A), Jul 22, 1973: Hiller UH12A (N8145H), Springtown, TX, Substantial damage. Piece of cotter pin lodged in pump housing,sheared drive shaft. Lnd on sloping plowed fld. Hit stump ## STCs that may be installed (OpenAirDocs) (31) 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 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 SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SR00420NY](https://openairdocs.org/stc/SR00420NY): Installation of Airwolf remote mounted engine oil filter Model AFC-600. Airwolf Filter, Corp - [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 SH276WE](https://openairdocs.org/stc/SH276WE): Installation of UH-12C Upper Canopy. Heck Research LLC - [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 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 SA02520AT](https://openairdocs.org/stc/SA02520AT): Installation of M-20 Oil Separator, model 600-WP. M-20 Oil Separators LLC - [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches. Aero Manufacturing Inc - [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 SA2350NM PAGE 1](https://openairdocs.org/stc/SA2350NM%20PAGE%201): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International - [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 SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201): Installation of electronics International Digital Volt/Amp Gauges and Accessories. Electronics International - [STC SH446EA](https://openairdocs.org/stc/SH446EA): Installation of Franklin engine Model 6V-350B in Fairchild Hiller UH-12A helicopter. Franklin Engine Co Inc. Lists UH-12 Series - [STC SH80WE](https://openairdocs.org/stc/SH80WE): Installation of Simplex thirty-two foot spray boom. Simplex Manufacturing Co. Lists UH-12 Series - [STC SH1-457](https://openairdocs.org/stc/SH1-457): Aircooler Motors 6VS-335B turbo-supercharged engine (derated). Carson Helicopters Inc. Lists UH-12 Series - [STC SH160AL](https://openairdocs.org/stc/SH160AL): Airborne control survey system. US Dept of Interior. Lists UH-12 Series - [STC SH32WE](https://openairdocs.org/stc/SH32WE): Fabricate and install jump-step. USDA Forest Service. Lists UH-12 Series - [STC SH4-1101](https://openairdocs.org/stc/SH4-1101): Aerofilter 30690B with element1A0286. Winslow Aerofilter Corp. Lists UH-12 Series - [STC SH4-178](https://openairdocs.org/stc/SH4-178): Curved control stick. Nystrom Aviation Inc. Lists UH-12 Series - [STC SH52WE](https://openairdocs.org/stc/SH52WE): High volume fifty foot spray boom kit. Simplex Manufacturing Co. Lists UH-12 Series - [STC SH77AL](https://openairdocs.org/stc/SH77AL): Tundra snow shoes. ERA Helicopters Inc. Lists UH-12 Series - [STC SH9AL](https://openairdocs.org/stc/SH9AL): Airglas tundra pads L-100. Intl Helicopters. Lists UH-12 Series - [STC SA2350NM](https://openairdocs.org/stc/SA2350NM) (historical): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories. Electronics International ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Rogerson Hiller UH-12A](https://openairdocs.org/model/rogerson-hiller-uh-12a): 0 registered aircraft, registry code 4363003 --- 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.