# N9021R: Bell-Continental Copters 47G2

- Status: Valid registration
- Airframe: [Bell-Continental Copters 47G2](https://openairdocs.org/model/bell-continental-copters-47g2) (registry code 1181069, 3 seats)
- Engine: [Lycoming VO-435-A1F](https://openairdocs.org/engine/lycoming-vo-435-a1f) (registry code 42200)
- Data sheets: [TCDS H5SW](https://openairdocs.org/tcds/H5SW) (Scott's-Bell 47 Inc), [TCDS E-279](https://openairdocs.org/tcds/E-279) (Lycoming Engines) (OpenAirDocs)
- Serial number: CCI-165
- Type: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: November 3, 2003
- Certificate issued: June 9, 2011
- Expires: June 30, 2027
- Mode S code: AC7925
- Registered owner: [Sky Horse Helicopters Inc](https://openairdocs.org/faa-owner/SKY%20HORSE%20HELICOPTERS%20INC)
- Location: [Brady, TX](https://openairdocs.org/faa-place/TX/Brady)
- Owner type: Corporation
- Owner's area on the map: 31.0985° N, 99.3939° W: Placed by OpenAirDocs at the center of ZIP code 76825, within about 12 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9021R
- Page: https://openairdocs.org/aircraft/N9021R

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 8 in force

### Matched by airframe (Bell-Continental Copters 47G2)

None in force.

### Matched by engine (Lycoming VO-435-A1F)

- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 2012
- [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004
- [AD 90-04-06 R1](https://openairdocs.org/ad/90-04-06-R1): Propeller Governor External Oil Line · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 427 more. Effective May 28, 1991
- [AD 80-04-04 R1](https://openairdocs.org/ad/80-04-04-R1): Crankshaft Flange Bolts · Lycoming Engines IVO-540-A1A, TIVO-540-A2A, TVO-435-A1A and 38 more. Effective Aug 18, 1980
- [AD 69-24-03](https://openairdocs.org/ad/69-24-03): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 321 more. Effective Nov 29, 1969
- [AD 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969
- [AD 68-08-08](https://openairdocs.org/ad/68-08-08): Hydraulic Valve · Lycoming Engines IGSO-480-A1A6, IGSO-480-A1B6, IGSO-480-A1C6 and 44 more. Effective May 19, 1968

### Historical (superseded or no longer in force)

- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024

## Information bulletins (advisory) (2 in force)

- [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019
- [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014

## NTSB investigations (4)

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 CEN12LA120](https://openairdocs.org/ntsb/CEN12LA120), Jan 1, 2012: Continental Copters 47G2 (N9021R), Lohn, TX, substantial damage. Probable cause: The improper installation of the tail rotor gearbox by maintenance personnel, which led to accelerated wear of the ring and pinion gears, resulting in the loss of tail rotor effectiveness and…
- [NTSB LAX99LA047](https://openairdocs.org/ntsb/LAX99LA047), Dec 12, 1998: Bell 47G2 (N9021R), Helendale, CA, substantial damage. Probable cause: The pilot's failure to follow proper procedures to recover from main rotor blade aerodynamic retreating blade stall.
- [NTSB LAX97LA285](https://openairdocs.org/ntsb/LAX97LA285), Aug 12, 1997: Bell 47G2 (N9021R), Mojave, CA, substantial damage. Probable cause: The student's improper use of the throttle and collective controls and the flight instructor's inadequate supervision of the flight.
- [NTSB NYC72FHJ01](https://openairdocs.org/ntsb/NYC72FHJ01), Jul 11, 1971: Bell-Cci 47G2 (N9021R), Amityville, NY, substantial damage

## FAA accident and incident reports (4)

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 20120101000549A](https://openairdocs.org/incident/20120101000549A), Jan 1, 2012: Bell-Continental Copters Inc. 47G2 (N9021R), Lohn, TX, Substantial damage. Pilot stated he did a pre flight inspection per the operator's manual, loaded his passenger for the purpose of pasture count of deer on hunting leases. On the…
- [Accident 19981211033299A](https://openairdocs.org/incident/19981211033299A), Dec 11, 1998: Bell 47G2 (N9021R), Helendale, CA, Substantial damage. (.19)On December 11, 1998, at 1645 hours pacific standard time, a Bell 47G2, N9021R, sustained substantial damage during a forced landing near Helendale,…
- [Accident 19970812021809A](https://openairdocs.org/incident/19970812021809A), Aug 12, 1997: Bell 47G2 (N9021R), Mojave, CA, Substantial damage. On August 12, 1997, at 1000 pacific daylight time, a Bell 47G2, N9021R, la ned hard on runway 4 at the Mojave, California airport. The local area instructional…
- [Incident 19830206007729I](https://openairdocs.org/incident/19830206007729I), Feb 6, 1983: Bell 47G2 (N9021R), Corona, CA, Minor damage. Pilot had yaw problems during hovering. Found tail rotor drive shaft failed.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (22)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Lycoming VO-435-A1F)

- [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive. Alcor LLC. Lists VO-435 Series
- [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists VO-435 Series
- [STC SE7504SW](https://openairdocs.org/stc/SE7504SW): Installation of any or all parts listed on Airmotive Engineering Drawing List No. 852-1, Rev. 1, dated 10/4/88, or later FAA approved revision. Continental Motors, Inc. Lists VO-435 Series
- [STC SE7665SW](https://openairdocs.org/stc/SE7665SW): Installation of parts listed on Airmotive List No. 8810-3, Rev 6. Continental Motors, Inc. Lists VO-435 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists VO-435 Series
- [STC SE2902NM](https://openairdocs.org/stc/SE2902NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [STC SE144GL](https://openairdocs.org/stc/SE144GL): Modify engine to increase compression ratio to 8.7:1. Scott's Bell 47 Inc
- [STC SE2500SW](https://openairdocs.org/stc/SE2500SW): Modification to higher compression ratio. Scott's Bell 47 Inc
- [STC SE2733SW](https://openairdocs.org/stc/SE2733SW): Modification to higher compression ratio. Scott's Bell 47 Inc
- [STC SE1-201](https://openairdocs.org/stc/SE1-201): Installation of the Richter Aero Equipment Type B-4 or B-5 Temperature Probe. (O-360 SERIES (excl. A1C, C2B, C2D)). MidContinent Instru Co Inc. Lists VO-435 Series
- [STC SE09492SC](https://openairdocs.org/stc/SE09492SC): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013. Exxon Company USA. Lists VO-435 Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists VO-435 Series
- [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists VO-435 Series
- [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company. Lists VO-435 Series
- [STC SE80NE](https://openairdocs.org/stc/SE80NE): Installation and usage of Bel-Ray synthetic aviation oil, Bel-Ray Aero 1, (nonsupercharged), horizontally opposed direct drive, aircraft engines of 350 hp. or less. Bel-Ray Company, Inc. Lists VO-435 Series
- [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL. Lists VO-435 Series
- [STC SE959EA](https://openairdocs.org/stc/SE959EA): Modification to higher compression ration. Agrotors, Inc
- [STC SE2-856](https://openairdocs.org/stc/SE2-856): American Bosch Induction vibrator VJR24B56X. Bell Helicopter Textron. Lists VO-435 Series
- [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines. Kling Oil Company. Lists VO-435 Series

## Related

- Other Bell-Continental Copters 47G2 aircraft: https://openairdocs.org/model/bell-continental-copters-47g2/aircraft.md
- The Lycoming VO-435-A1F engine: https://openairdocs.org/engine/lycoming-vo-435-a1f.md

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