# Robinson Helicopter R44 ASTRO

- Type: Aircraft model (FAA registry)
- Registry code: 7640121
- Manufacturer (registry): ROBINSON HELICOPTER COMPANY
- Model: R44 ASTRO
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Reciprocating
- Seats: 4
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS H11NM](https://openairdocs.org/tcds/H11NM) (OpenAirDocs)
- Holder: Robinson Helicopter Company
- Registered aircraft: 6
- Page: https://openairdocs.org/model/robinson-helicopter-r44-astro

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 2025-11-07](https://openairdocs.org/ad/2025-11-07): Engine/Transmission Coupling · Robinson Helicopter R44 and R44 II. Effective Jul 11, 2025
- [AD 2024-23-01](https://openairdocs.org/ad/2024-23-01): Main rotor drive system, Rotorcraft flight control · Robinson Helicopter R44 and R44 II. Effective Jan 7, 2025
- [AD 2024-20-07](https://openairdocs.org/ad/2024-20-07): Emergency Equipment; Emergency Flotation Section · Apical Emergency Float Kit, P/N 20498 (STC SR00780LA or 12 others). Effective Dec 5, 2024
- [AD 2024-20-03](https://openairdocs.org/ad/2024-20-03): Flight Control System · Robinson Helicopter R22 BETA, R22 MARINER, R44 and 1 more. Effective Nov 29, 2024
- [AD 2024-04-02](https://openairdocs.org/ad/2024-04-02): Tail Rotor Blades · Robinson Helicopter R22, R22 ALPHA, R22 BETA and 4 more. Effective Apr 2, 2024
- [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 2022-19-12](https://openairdocs.org/ad/2022-19-12): Tail Rotor Blades · Robinson Helicopter R44, R44 II and R66. Effective Oct 20, 2022
- [AD 2022-12-08](https://openairdocs.org/ad/2022-12-08): Flight Control System Wiring, Engine Control System Wiring, Engine RPM Indicating System · Robinson Helicopter R22 BETA, R44 and R44 II. Effective Jun 29, 2022
- [AD 2020-08-10](https://openairdocs.org/ad/2020-08-10): Tail Rotor Blades · Robinson Helicopter R44 and R44 II. Effective May 22, 2020
- [AD 2020-05-11](https://openairdocs.org/ad/2020-05-11): Agricultural Spray System · Robinson Helicopter R44 and R44 II with STC SR00286BO. Effective Apr 16, 2020
- [AD 2016-26-04](https://openairdocs.org/ad/2016-26-04): Main Rotor Blades · Robinson Helicopter R44, R44 II and R66. Effective Feb 8, 2017
- [AD 2014-23-16](https://openairdocs.org/ad/2014-23-16): Main Rotor Blades · Robinson Helicopter R22, R22 ALPHA, R22 BETA and 3 more. Effective Jan 9, 2015
- [AD 2013-05-15](https://openairdocs.org/ad/2013-05-15): Emergency floats · Robinson Helicopter R44 and R44 II. Effective Apr 30, 2013
- [AD 2010-24-03](https://openairdocs.org/ad/2010-24-03): Tail rotor · Robinson Helicopter R22, R22 ALPHA, R22 BETA and 3 more. Effective Dec 29, 2010
- [AD 2007-11-01](https://openairdocs.org/ad/2007-11-01): Seat belt buckle (buckle) assembly · Robinson Helicopter R44 and R44 II. Effective Jun 27, 2007
- [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006
- [AD 95-26-05 R1](https://openairdocs.org/ad/95-26-05-R1): R44 Rotorcraft Flight Manual (RFM) · Robinson Helicopter R44 and R44 II. Effective Jul 6, 2004
- [AD 2003-24-51](https://openairdocs.org/ad/2003-24-51): Main rotor swashplate · Robinson Helicopter R44 and R44 II
- [AD 2003-04-05](https://openairdocs.org/ad/2003-04-05): Pitch control bearings (bearings) · Robinson Helicopter R44. Effective Mar 26, 2003
- [AD 2001-20-18](https://openairdocs.org/ad/2001-20-18): Horizontal Stabilizers · Robinson Helicopter R44. Effective Nov 19, 2001
- [AD 2000-07-03](https://openairdocs.org/ad/2000-07-03): Fuel Line Assembly · Robinson Helicopter R44. Effective May 11, 2000
- [AD 2000-08-04](https://openairdocs.org/ad/2000-08-04): Sprag Clutches · Robinson Helicopter R44. Effective May 4, 2000
- [AD 99-23-01](https://openairdocs.org/ad/99-23-01): Grip Assembly P/N A756-6 Rev. A thru 7 N · Robinson Helicopter R44. Effective Dec 8, 1999
- [AD 99-17-17](https://openairdocs.org/ad/99-17-17): Yoke Assembly · Robinson Helicopter R44. Effective Oct 7, 1999
- [AD 99-13-11](https://openairdocs.org/ad/99-13-11): Auxiliary Fuel Tank Sump Drain · Robinson Helicopter R44. Effective Jul 29, 1999
- [AD 99-07-18](https://openairdocs.org/ad/99-07-18): Sprag Clutch · Robinson Helicopter R44. Effective Apr 28, 1999
- [AD 98-22-16](https://openairdocs.org/ad/98-22-16): Main Rotor Blade Skin Fatigue Crack Inspection · Robinson Helicopter R44. Effective Nov 10, 1998
- [AD 98-04-12](https://openairdocs.org/ad/98-04-12): Lateral Cyclic Trim Spring Shaft · Robinson Helicopter R44. Effective Apr 27, 1998
- [AD 98-05-10](https://openairdocs.org/ad/98-05-10): Aluminum Elbows · Robinson Helicopter R44. Effective Mar 18, 1998
- [AD 97-16-02](https://openairdocs.org/ad/97-16-02): Up-Limit Switches · Robinson Helicopter R44. Effective Aug 18, 1997
- [AD 97-02-15](https://openairdocs.org/ad/97-02-15): Main Rotor RPM Sensor Resetting · Robinson Helicopter R44. Effective Mar 4, 1997
- [AD 96-18-22](https://openairdocs.org/ad/96-18-22): Gear Carrier Securing Bolts · Robinson Helicopter R44. Effective Oct 25, 1996
- [AD 95-11-10](https://openairdocs.org/ad/95-11-10): FAA FM - Limitations - Low-G Pushovers · Robinson Helicopter R44. Effective Jul 14, 1995
- [AD 95-09-07](https://openairdocs.org/ad/95-09-07): Cyclic Control System · Robinson Helicopter R44. Effective May 24, 1995
- [AD 94-26-10](https://openairdocs.org/ad/94-26-10): Cyclic Stick Assembly · Robinson Helicopter R44. Effective Jan 11, 1995

Historical (superseded or no longer in force):

- [AD 2024-19-11](https://openairdocs.org/ad/2024-19-11) (historical): Engine/Transmission coupling · Robinson Helicopter R44 and R44 II. Effective Oct 31, 2024
- [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 2021-19-08](https://openairdocs.org/ad/2021-19-08) (historical): Tail Rotor Blades · Robinson Helicopter R44 and R44 II. Effective Sep 22, 2021
- [AD 2011-12-10](https://openairdocs.org/ad/2011-12-10) (historical): Main rotor blade · Robinson Helicopter R22, R22 ALPHA, R22 BETA and 3 more. Effective Jul 5, 2011
- [AD 2007-26-12](https://openairdocs.org/ad/2007-26-12) (historical): Blade skin debond · Robinson Helicopter R22, R22 ALPHA, R22 BETA and 3 more. Effective Jan 18, 2008
- [AD 95-26-05](https://openairdocs.org/ad/95-26-05) (historical): Rotorcraft Flight Manual - Limitation Section · Robinson Helicopter R44. Effective Jan 26, 1996

## Information bulletins (advisory) (18)

- [SAIB 2024-05](https://openairdocs.org/saib/2024-05): Engine/Transmission Coupling, Gearmotor Assembly. Issued Oct 29, 2024
- [SAIB 2022-21](https://openairdocs.org/saib/2022-21): EMERGENCY FLOTATION SECTION, Pop-Out Float Under-inflation.. Issued Nov 21, 2022
- [SAIB AIR-22-08](https://openairdocs.org/saib/AIR-22-08): MAIN ROTOR DRIVE SYSTEM,TAIL ROTOR DRIVE SYSTEM. Issued Apr 11, 2022
- [SAIB AIR-22-03](https://openairdocs.org/saib/AIR-22-03): Robinson Helicopter Company Model R22, R44, and R66 Helicopters; Emergency Locator Transmitter Retention. Issued Mar 3, 2022
- [SAIB AIR-21-14](https://openairdocs.org/saib/AIR-21-14): Robinson R44 and R66 HeliSAS Autopilot/Garmin Primary Flight Display (PFD) Interface. Issued Aug 24, 2021
- [SAIB AIR-21-11](https://openairdocs.org/saib/AIR-21-11): ROTORCRAFT SERVO SYSTEM (JASC 6730). Issued Jul 22, 2021
- [SAIB AIR-21-03](https://openairdocs.org/saib/AIR-21-03): Electrical Power System; Ameri-King RFI DC Filter Smoke/Fire. Issued Jan 28, 2021
- [SAIB SW-20-01](https://openairdocs.org/saib/SW-20-01): Electrical Power System - Battery Electrolyte Leakage. Issued Mar 6, 2020
- [SAIB SW-15-08R1](https://openairdocs.org/saib/SW-15-08R1): Robinson R44 and R44 Main Rotor Blades. Issued Mar 31, 2015
- [SAIB SW-15-08](https://openairdocs.org/saib/SW-15-08) (historical): Robinson R44 Main Rotor Blades. Issued Feb 23, 2015
- [SAIB SW-13-11](https://openairdocs.org/saib/SW-13-11): JASC Code 2810 Fuel Storage Robinson Helicopter Company Bladder Fuel Tank Retrofit. Issued Dec 26, 2012
- [SAIB SW-12-45](https://openairdocs.org/saib/SW-12-45): Garmin Model 400W/500W Series GPS-WAAS Navigation System. Issued Oct 3, 2012
- [SAIB SW-11-15](https://openairdocs.org/saib/SW-11-15): Carbon Monoxide Detectors. Issued Jan 6, 2011
- [SAIB SW-09-07](https://openairdocs.org/saib/SW-09-07): JASC Code 2410 Alternator-Generator Drive, Robinson Helicopter Company Alternator Belts. Issued Jan 30, 2009
- [SAIB SW-07-16](https://openairdocs.org/saib/SW-07-16): Rotor blade skin debonding. Issued Feb 9, 2007
- [SAIB SW-06-55](https://openairdocs.org/saib/SW-06-55): . Issued Jul 13, 2006
- [SAIB SW-06-19](https://openairdocs.org/saib/SW-06-19): . Issued Dec 28, 2005
- [SAIB ASW-95-01](https://openairdocs.org/saib/ASW-95-01): . Issued Jan 10, 1995

## Registered aircraft (6)

- [N128KR](https://openairdocs.org/aircraft/N128KR): [Rogue Texan Outfitters LLC](https://openairdocs.org/faa-owner/ROGUE%20TEXAN%20OUTFITTERS%20LLC), [Skidmore, TX](https://openairdocs.org/faa-place/TX/Skidmore), built 1994, S/N 0047
- [N144FL](https://openairdocs.org/aircraft/N144FL): [South Florida Helicopters Inc](https://openairdocs.org/faa-owner/SOUTH%20FLORIDA%20HELICOPTERS%20INC), [Indiantown, FL](https://openairdocs.org/faa-place/FL/Indiantown), S/N 0654
- [N171WC](https://openairdocs.org/aircraft/N171WC): [Flora, IL](https://openairdocs.org/faa-place/IL/Flora), built 1997, S/N 0331, Registration pending
- [N18FH](https://openairdocs.org/aircraft/N18FH): [Paratus Air Inc](https://openairdocs.org/faa-owner/PARATUS%20AIR%20INC), [Auburn, IN](https://openairdocs.org/faa-place/IN/Auburn), built 1999, S/N 0651
- [N300MK](https://openairdocs.org/aircraft/N300MK): [Agricultural Tours LLC](https://openairdocs.org/faa-owner/AGRICULTURAL%20TOURS%20LLC), [Kahuku, HI](https://openairdocs.org/faa-place/HI/Kahuku), S/N 1151
- [N680PM](https://openairdocs.org/aircraft/N680PM): [N680pm LLC](https://openairdocs.org/faa-owner/N680PM%20LLC), [Knoxville, IA](https://openairdocs.org/faa-place/IA/Knoxville), built 1999, S/N 0680

## NTSB investigations (3)

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 LAX06CA221](https://openairdocs.org/ntsb/LAX06CA221), Jun 29, 2006: Robinson R-44 (N52EP), Fresno, CA, substantial damage. Probable cause: the pilot's failure to maintain directional control following a loss of tail rotor effectiveness while in a downwind hover.
- [NTSB CHI06FA128](https://openairdocs.org/ntsb/CHI06FA128), May 13, 2006: Robinson R44 (N442GS), East Troy, WI, substantial damage. Probable cause: The pilot's failure to calculate the weight and balance of the helicopter prior to flight, his failure to recognize and correct the forward center of gravity condition and his failure to abort the…
- [NTSB NYC02WA063](https://openairdocs.org/ntsb/NYC02WA063), Feb 21, 2002: Robinson R-44 (N110DD), Verona, Italy, destroyed, 1 fatal

## FAA accident and incident reports (3)

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.

- [Incident 20110528010649I](https://openairdocs.org/incident/20110528010649I), May 28, 2011: Robinson Helicopter Company R44 ASTRO (N128KR), Huntsville, TN, Minor damage. On the second sightseeing tour of the day, under the provisions of 91.147, the pilot loaded 3 passengers. He inquired as to the weight of each passenger and…
- [Accident 20060628013579A](https://openairdocs.org/incident/20060628013579A), Jun 28, 2006: Robsin R44ASTRO (N52EP), Fresno, CA, Substantial damage. (-23) The pilot performed a downwind takeoff with a thirteen knot tailwind. During this phase of flight, the helicopter lost tailrotor authority causing loss…
- [Accident 20060513026779A](https://openairdocs.org/incident/20060513026779A), May 13, 2006: Robsin R44II (N442GS), East Troy, WI, Destroyed. (-23) On may 13, 2006, at 1045 CDT, at East Troy airport (57C), the pilot [privacy data omitted] a commercial pilot, [privacy data omitted] attempted to take…

## Service difficulty reports (1)

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

- [SDR YV3R2020082000326](https://openairdocs.org/sdr/YV3R2020082000326), Jul 29, 2020: CONTROLLER. DEFECTIVE. CUSTOMER REPORTED CONTROLLER ASSEMBLY P/N: D278-1 WAS HUNTING DURING OPERATION, NOT FUNCTIONING PROPERLY.

## STCs that may be installed (OpenAirDocs) (102, 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 SR12177IB](https://openairdocs.org/stc/SR12177IB): Installation of Floor Protector. Delastek Inc
- [STC SR02420AK](https://openairdocs.org/stc/SR02420AK): Installation of the ZW Aviation LLC R44M-001 Utility Camera Mount. Gyro-Stabilized Systems LLC
- [STC SR03403CH](https://openairdocs.org/stc/SR03403CH): Installation of universal internal mount for electrical equipment provisions. STERLING HELICOPTER
- [STC SR02270AK](https://openairdocs.org/stc/SR02270AK): Manufacture cargo rack. Larry T. Larrivee
- [STC SR02049LA](https://openairdocs.org/stc/SR02049LA): Installation of Apical Industries, Inc. Emergency Float Kits. Apical Industries, Inc. dba Dart Aerospace
- [STC SR01980WI](https://openairdocs.org/stc/SR01980WI): Installation of Garmin GI 275 Multi-Function Instrument. Garmin International Inc
- [STC SA01435LA](https://openairdocs.org/stc/SA01435LA): Installation of engines modified with Firewall Forward Technologies LLC modified camshaft. Centri-Lube Technologies LLC
- [STC SR00086BO](https://openairdocs.org/stc/SR00086BO): Operation of rotorcraft on unleaded and leaded automotive gasoline, 91 minimum antiknock index (RON + MON)/2 per ASTM Specification D-439 or D-4814. Petersen Aviation Inc
- [STC SA11137SC](https://openairdocs.org/stc/SA11137SC): Installation of Plane-Power ALT-FLX alternator. Hartzell Engine Technologies, LLC
- [STC SR02431AK](https://openairdocs.org/stc/SR02431AK): Installation of the LAM-R44 Portable Device Mount. Airglas Inc
- [STC SR03512AT](https://openairdocs.org/stc/SR03512AT): Installation of HID Landing and Taxi Lights. Whelen Aerospace Technologies
- [STC SR00578SE](https://openairdocs.org/stc/SR00578SE): Fabrication of Onboard Systems Cargo Hook Kits Model 200-227-00 (without load weigh), Model 200-228-00 (with load weigh), Model 200-313-00 (28V, without load weigh), Model 200-314-00 (28V, with load weigh). Onboard Systems International
- [STC SR01064SE](https://openairdocs.org/stc/SR01064SE): Fabrication of Onboard Systems Model 200-265-00 12 Volt Talon LC Keeperless cargo hook kit without load weigh, Model 200-266-00 12 Volt Talon LC Keeperless Cargo hook kit with load weigh, Model 200-288-00 28 Volt Talon LC Keeperless cargo hook kit without load weigh. Onboard Systems International LLC
- [STC SR01808SE](https://openairdocs.org/stc/SR01808SE): Installation of Onboard Systems International Cargo Hook Kit. Onboard Systems International
- [STC SR04200AT](https://openairdocs.org/stc/SR04200AT): Installation of a Sky Sign Model H-47C Electronic Billboard. SKY SIGN INC
- [STC SR02254LA](https://openairdocs.org/stc/SR02254LA): Installation of stability augmentation system and autopilot. S-TEC Corporation
- [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC
- [STC SR02736LA](https://openairdocs.org/stc/SR02736LA): Installation of Skid Step. Longhorn Aviation Services LLC
- [STC SR02991NY](https://openairdocs.org/stc/SR02991NY): The installation of Quick Release Mounting Provisions and Quick Release Cargo Basket. Dart Aerospace Limited
- [STC SR03297CH](https://openairdocs.org/stc/SR03297CH): Installation of provisions for external equipment. Certex Aviation LLC
- [STC SR02622SE](https://openairdocs.org/stc/SR02622SE): Installation of Garmin G500H TXi Display System (Primary Flight Display (PDF), Multi-Function Display (MFD)). Garmin International Inc
- [STC SR02363AK](https://openairdocs.org/stc/SR02363AK): Installation of a fixed mounted Max-Viz® Enhanced Vision System (EVS) Models 100/600 to include a sensor Line Replaceable Unit (LRU) with conformal housing, power supply, and a glareshield-mounted, dedicated display monitor. PECO Inc
- [STC SR04453CH](https://openairdocs.org/stc/SR04453CH): Installation of Appareo Systems LLC Stratus ES & Stratus ESG ADS-B transponder. Appareo Systems LLC
- [STC SR02124SE](https://openairdocs.org/stc/SR02124SE): Installation functionality. of Data Garmin Required: transponders: (1) Garmin GTX Master 345/345R Drawing with List ADS-B (MDL), Out and In 005-00734-A4, functionality;. Garmin International Inc
- [STC SR02295LA](https://openairdocs.org/stc/SR02295LA): Installation of Garmin Model G500H Flight Display System. Garmin International Inc
- [STC SR02432NY](https://openairdocs.org/stc/SR02432NY): Installation of Helitowcart Bear Paw Models BP350, BP44 or BP130. Dart Aerospace Ltd
- [STC SR02521AK](https://openairdocs.org/stc/SR02521AK): Installation of bicycle racks. Robbie Rack LLC
- [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SR02290AK](https://openairdocs.org/stc/SR02290AK): Manufacture tundra/snow boards, Install and maintain. Pollux Aviation Ltd
- [STC SR03080NY](https://openairdocs.org/stc/SR03080NY): Installation of the External Power Receptacle (EGPR). Aero Design Ltd
- [STC SR00805NY](https://openairdocs.org/stc/SR00805NY): Manufacture and installation of bearpaws. Northeast Engr & Dev Ltd
- [STC SR00387BO](https://openairdocs.org/stc/SR00387BO): Installation of Avidyne 700-00182-XXX IFD5XX and 700-00179-XXX IFD4XX Series Integrated Flight Displays (IFD). Avidyne Corporation
- [STC SR00342NY](https://openairdocs.org/stc/SR00342NY): Installation of Airwolf remote mounted engine oil filter kit AFC-8011. Airwolf Filter Corporation
- [STC SR02660LA](https://openairdocs.org/stc/SR02660LA): Installation of Nose Utility Mount. Airfilm Camera Systems
- [STC SR02506SE](https://openairdocs.org/stc/SR02506SE): Installation of the Collective Pull Down System, installed and maintained. HeliTrak Inc
- [STC SA2586NM](https://openairdocs.org/stc/SA2586NM): Installation of J.P. Instruments temperature monitoring systems. J P Instruments
- [STC SR09568RC](https://openairdocs.org/stc/SR09568RC): Installation of Tech Tool Plastics replacement doors with full view windows. Tech-Tool Plastics Inc
- [STC SR02487AK](https://openairdocs.org/stc/SR02487AK): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System. ADS-B Technologies, LLC
- [STC SR03901NY](https://openairdocs.org/stc/SR03901NY): Installation of Replacement Seat Cushion/Backrest and Interior Accessories. Ramm Aerospace Inc
- [STC SR03879NY](https://openairdocs.org/stc/SR03879NY): Installation of Replacement Floor Covering Kits. Ramm Aerospace Inc
- [STC SR03878NY](https://openairdocs.org/stc/SR03878NY): Installation of Replacement Headliner and Bulkhead Covering Kits. Ramm Aerospace Inc
- [STC SR03866NY](https://openairdocs.org/stc/SR03866NY): Installation of LIDAR Anchoring System. Alevia Aeronautique Inc
- [STC SR00840DE](https://openairdocs.org/stc/SR00840DE): Installation of the Rosen Sunvisor System into the Robinson R22. R44 and R66. Rosen Sunvisor Systems LLC
- [STC SR02206SE](https://openairdocs.org/stc/SR02206SE): Installation of Garmin G500H Avionics Display System including GDU 620 PFD/MFD, GRS 77H AHRS, GMU 44 Magnetometer, GDC 74H Air Data Computer, and GTP 59 Temperature Probe. Garmin International Inc
- [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 SR02429AK](https://openairdocs.org/stc/SR02429AK): Installation of Airglas, Inc. LTB2600 Modular Terrain System. Airglas 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 SR09645RC](https://openairdocs.org/stc/SR09645RC): Installation of Cool City Electronics Inc. Automatic Flight Control System (AFCS), Stability Control Augmentation System (SCAS), Yaw Damper System and Orbit Mode. Cool City Electronics Inc. dba Cool City Avionics
- [STC SA01669CH](https://openairdocs.org/stc/SA01669CH): Installation of Challenger Reusable Air Filter. Challenger Aviation Products Inc

All 102: https://openairdocs.org/model/robinson-helicopter-r44-astro/stcs.md

## PMA parts (OpenAirDocs) (338, 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.

- [98020044-5012](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID106369861120260402153653.0001): Robinson R44 NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · Mar 24, 2026
- [98020044-5011](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171083701520260325205944.0001): Robinson R44 NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · Mar 23, 2026
- [LHA-44-005](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147516958220260514172733.0001): Aft Attachment Bracket. Longhorn Aviation Services, LLC. · PMA PQ00042CB · Modification part · Mar 17, 2026
- [LHA-44-007](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137520108420260514172733.0001): Clamp Spacer. Longhorn Aviation Services, LLC. · PMA PQ00042CB · Modification part · Mar 17, 2026
- [LHA-44-002](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125337596820260514172732.0001): Forward Clamp, RH. Longhorn Aviation Services, LLC. · PMA PQ00042CB · Modification part · Mar 17, 2026
- [LHA-44-003](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID114061500920260514172732.0001): Step. Longhorn Aviation Services, LLC. · PMA PQ00042CB · Modification part · Mar 17, 2026
- [LHA-44-001](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID106443746320260514172732.0001): Forward Clamp, LH. Longhorn Aviation Services, LLC. · PMA PQ00042CB · Modification part · Mar 17, 2026
- [LHA-44-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID109028373720241017194519.0001): R44/R66 Skid Tube Step. RSG Products Inc · PMA PQ03883SW · Replaces LHA-44-1 · Oct 17, 2024
- [98020044-1009](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126111785520240620171833.0001): Robinson R44NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · May 1, 2024
- [5MA2346-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188174253120240515131426.0001): Float. SMR Acquisition LLC dba SMR Technologies Inc · PMA PQ0845NE · Replaces B900-7R · Mar 27, 2024
- [5MA2346-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125105333720240515131426.0001): Float. SMR Acquisition LLC dba SMR Technologies Inc · PMA PQ0845NE · Replaces B900-7L · Mar 27, 2024
- [TAU03323](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169171093220240221143036.0001): AV/Cabin Heat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Dec 14, 2023
- [TA2778-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137193249420231101130942.0001): Heli- Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 16, 2023
- [TA2778-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117046040020231101130942.0001): Heli- Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 16, 2023
- [98020044-5010](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149786026520230726122644.0001): Robinson R44NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · Jul 13, 2023
- [V674903-91](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162268515320230713122534.0001): Leaded and Unleaded Automotive Gasoline. Petersen Aviation Inc · PMA PQ3427CE · Modification part · Jul 11, 2023
- [98020044-5009](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131005634220230424165647.0001): Robinson R44NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · Apr 19, 2023
- [149-12HT-H2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135824552320230508162358.0001): Starter Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 149-12HT-H, BC315-100-2, MZ4224 · Jan 10, 2023
- [149-24HT-H4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID104706339120230508162404.0001): Starter Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 149-24HT-H, BC315-100-4 · Jan 10, 2023
- [200-327-00200-327-01200-327-10200-327-11](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179990350320220811112133.0001): Cargo Hook Suspension System, 28V. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-265-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165717452020220811112115.0001): R-44 12V Cargo Hook Suspension System – without Load Weigh. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-324-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164339944520220811112129.0001): 12V Susp. System. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-289-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163639462920220811112116.0001): R-44 28V Susp. System – with Load Weigh. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-326-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162908769620220811112132.0001): 12V Susp. System. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-227-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID158276310120220811112049.0001): Cargo Hook Kit Robinson R44 (without Load Weigh). Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-327-02200-327-12](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID144735607720220811112218.0001): Cargo Hook Suspension System, 28V. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-340-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140923443220220811112133.0001): Pin Load Weigh System. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-288-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136970210120220811112115.0001): R-44 28V Susp. System – without Load Weigh. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-340-01](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136242924220220811112219.0001): Pin Load Weigh System. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-325-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129212867320220811112130.0001): 28V Susp. System. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-325-01](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127813938520220811112131.0001): 28V Susp. System w/ Keepered Cargo Hook & Load Weigh. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-396-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117109809320220811112134.0001): Remote Hook Electrical Release Kit. Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [200-228-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100716551520220811112050.0001): Cargo Hook Kit Robinson R44 (with Load Weigh). Onboard Systems International · PMA PQ0055NM · Modification part · Jul 28, 2022
- [01-0790906-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID158819961620220610124319.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · Jun 6, 2022
- [AG843000-17](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID434912360120211110110517.0001): Gasket-UHF/VHF. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Aug 9, 2021
- [98020044-5008](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID159179246820210823174707.0001): Robinson R44 NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · May 3, 2021
- [CCA-110-H4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID133901990320260310185526.0001): Fuel Drain Valve Assembly. Curtis Superior Valve Co Inc · PMA PQ05319NM · Replaces Fuel Drain AssemblyA761-1 · Feb 25, 2021
- [LHA-44-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID413864469620210622143537.0001): R44/R66   Skid Tube Step. Aerocraft, Inc. · PMA PQ5299NM · Replaces LHA-44-1 · Dec 17, 2020
- [R44B-101](https://drs.faa.gov/browse/excelExternalWindow/FCC078E663F5D6EE862585DF00336B09.0001): Clamp Lower Bushing. Brunner Machine Works, LLC · PMA PQ04418CE · Replaces R44B-101 · Sep 7, 2020
- [R66B-904](https://drs.faa.gov/browse/excelExternalWindow/FA30BAF063F9E268862585DF00336B75.0001): Ratchet Strap Anchoring Base. Brunner Machine Works, LLC · PMA PQ04418CE · Replaces R66B-904 · Sep 7, 2020
- [R44B-102](https://drs.faa.gov/browse/excelExternalWindow/CB0AAAC5DD111A2A862585DF00336B39.0001): Clamp Upper Bushing. Brunner Machine Works, LLC · PMA PQ04418CE · Replaces R44B-102 · Sep 7, 2020
- [R66B-905](https://drs.faa.gov/browse/excelExternalWindow/5AF7D3533D48C80D862585DF00336BB0.0001): Ratchet Strap Side Cover. Brunner Machine Works, LLC · PMA PQ04418CE · Replaces R66B-905 · Sep 7, 2020
- [R66B-906](https://drs.faa.gov/browse/excelExternalWindow/4B392B036861E2B6862585DF00336BEC.0001): Ratchet Strap Anchoring Pivot Base. Brunner Machine Works, LLC · PMA PQ04418CE · Replaces R66B-906 · Sep 7, 2020
- [7242-14](https://drs.faa.gov/browse/excelExternalWindow/BE0D4A4B7E7C536D86258596003D5923.0001): Battery. Teledyne Battery Products · PMA PQ1006NM · Replaces Concorde RG24-15 · Jan 21, 2020
- [7242-16](https://drs.faa.gov/browse/excelExternalWindow/2293B1E27802C61686258596003D5951.0001): Battery. Teledyne Battery Products · PMA PQ1006NM · Replaces Concorde RG24-15 · Jan 21, 2020
- [8001723](https://drs.faa.gov/browse/excelExternalWindow/1603B700E3DC8A4D86258593003C44B9.0001): Engine Oil Cooler Assembly. Aero-Classics Heat Transfer Products Inc · PMA PQ2543NM · Replaces 10886A · Jan 20, 2020
- [98020044-5006](https://drs.faa.gov/browse/excelExternalWindow/C03981BBA0F2DDB78625857D005E743C.0001): Robinson R44 NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · Nov 12, 2019
- [98020044-5007](https://drs.faa.gov/browse/excelExternalWindow/7EF2231EAAE9F75A8625857D005E74C7.0001): Robinson R44 NVG Modification Kit. REB Technologies Inc · PMA PQ1018SW · Modification part · Nov 12, 2019
- [P/N AFC-K011](https://drs.faa.gov/browse/excelExternalWindow/CC8E09860B269B9686258567003E4652.0001): Airwolf Remote Oil Filter Kit. Airwolf Filter Corp. · PMA PQ3870SW · Modification part · Oct 8, 2019
- [R44M-601](https://drs.faa.gov/browse/excelExternalWindow/FFB2B83B896AC3E186258567004F6F8C.0001): Weldment Aft Cover. Brunner Machine Works, LLC. · PMA PQ04418CE · Replaces R44M-601 · Oct 1, 2019

All of them: https://openairdocs.org/model/robinson-helicopter-r44-astro/pma.md

## The same model under other registry codes

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

- [Robinson Helicopter R44](https://openairdocs.org/model/robinson-helicopter-r44): 551 registered aircraft, registry code 7640120

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