# Williams Helicopter UH-1B - Type: Aircraft model (FAA registry) - Registry code: 9790871 - Manufacturer (registry): WILLIAMS HELICOPTER CORP - Model: UH-1B - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Turbo-shaft - Seats: 15 - Weight class: Up to 12,499 lb - Certification: Type certificated - Data sheet: [TCDS H7SO](https://openairdocs.org/tcds/H7SO) (OpenAirDocs) - Holder: Overseas Aircraft Support Inc. - Registered aircraft: 1 - Page: https://openairdocs.org/model/williams-helicopter-uh-1b 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 2024-19-17](https://openairdocs.org/ad/2024-19-17): Rotorcraft flight control · Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N… (STC SR03408CH). Effective Oct 11, 2024 - [AD 2022-20-14](https://openairdocs.org/ad/2022-20-14): Main Rotor Gearbox · Bell Textron 204B, 205A, 205A-1 and 20 more. Effective Dec 27, 2022 - [AD 2022-22-12](https://openairdocs.org/ad/2022-22-12): Nose/Tail Landing Gear Structure/Axle · Replacement crosstubes P/N D212-664 (Dart Aerospace STC SR01298NY). Effective Nov 22, 2022 - [AD 2022-21-11](https://openairdocs.org/ad/2022-21-11): Main rotor blades · Bell Textron 204B, 205A, 205A-1 and 11 more. Effective Nov 16, 2022 - [AD 2022-05-10](https://openairdocs.org/ad/2022-05-10): Cabin Equipment/Furnishings · Airbus Helicopters AS332L, AS332L1, AS332L2 and 57 more. Effective Apr 20, 2022 - [AD 2022-06-05](https://openairdocs.org/ad/2022-06-05): Main Rotor System · WSH HH-1K, TH-1F, TH-1L and 11 more. Effective Mar 16, 2022 - [AD 2021-15-14](https://openairdocs.org/ad/2021-15-14): Rotorcraft Tail Boom · California Department of Forestry UH-1H, UH-1F, TH-1L and 39 more. Effective Aug 30, 2021 - [AD 2012-17-10](https://openairdocs.org/ad/2012-17-10): Main Rotor Blades · California Department of Forestry UH-1H, UH-1F, TH-1L and 36 more. Effective Sep 28, 2012 - [AD 2012-14-12](https://openairdocs.org/ad/2012-14-12): Tail Rotor Blades · California Department of Forestry UH-1H, UH-1F, TH-1L and 36 more. Effective Sep 4, 2012 - [AD 2010-14-12](https://openairdocs.org/ad/2010-14-12): Landing Gear System · Overseas Aircraft Support UH-1H, UH-1F, UH-1H and 40 more. Effective Jul 23, 2010 - [AD 2006-19-05](https://openairdocs.org/ad/2006-19-05): Tail rotor (T/R) slider · California Department of Forestry UH-1H, UH-1F, TH-1L and 36 more. Effective Oct 16, 2006 - [AD 2002-20-01](https://openairdocs.org/ad/2002-20-01): TT strap · Overseas Aircraft Support UH-1H, UH-1F, TH-1L and 34 more. Effective Nov 6, 2002 - [AD 2002-13-51](https://openairdocs.org/ad/2002-13-51): Tail Rotor (T/R) Grip · Overseas Aircraft Support UH-1H, UH-1F, TH-1L and 34 more. Effective Aug 19, 2002 - [AD 2002-01-31](https://openairdocs.org/ad/2002-01-31): Retirement Index Number (RIN) for Masts · Overseas Aircraft Support UH-1H, UH-1F, TH-1L and 36 more. Effective Mar 8, 2002 - [AD 2000-15-21 R1](https://openairdocs.org/ad/2000-15-21-R1): Main Rotor Mast Assemblies · Overseas Aircraft Support UH-1H, UH-1F, TH-1L and 33 more. Effective Nov 22, 2000 - [AD 99-25-12](https://openairdocs.org/ad/99-25-12): Tailboom Vertical Fin Spar · California Department of Forestry UH-1H, UH-1F, TH-1L and 31 more. Effective Jan 11, 2000 - [AD 99-07-15](https://openairdocs.org/ad/99-07-15): Tail Rotor Yoke · Arrow Falcon Exporters UH-1H, UH-1F, TH-1L and 33 more. Effective May 3, 1999 - [AD 97-01-06](https://openairdocs.org/ad/97-01-06): Tail Rotor Slider · Arrow Falcon Exporters UH-1H, UH-1F, TH-1L and 32 more. Effective Feb 13, 1997 - [AD 96-12-26](https://openairdocs.org/ad/96-12-26): Clean and Inspect Tail Rotor Blade · Arrow Falcon Exporters UH-1H, UH-1F, TH-1L and 36 more. Effective Sep 23, 1996 - [AD 95-10-08](https://openairdocs.org/ad/95-10-08): Tail Rotor Control System · Arrow Falcon Exporters UH-1H, UH-1F, TH-1L and 34 more. Effective May 26, 1995 - [AD 94-22-09](https://openairdocs.org/ad/94-22-09): Tail Rotor Driveshaft · Arrow Falcon Exporters UH-1H, UH-1F, TH-1L and 34 more. Effective Nov 22, 1994 - [AD 90-03-10](https://openairdocs.org/ad/90-03-10): Tail Rotor Grips · Arrow Falcon Exporters UH-1H, UH-1F, 204B and 33 more. Effective Oct 18, 1991 - [AD 90-10-05](https://openairdocs.org/ad/90-10-05): Tail Rotor Gearbox · Bell Helicopter Textron TH-1L, UH-1E, UH-1L and 17 more. Effective Jun 5, 1990 - [AD 89-08-06](https://openairdocs.org/ad/89-08-06): Transmission Internal Sump Oil Filter · AST UH-1F, TH-1L, UH-1E and 22 more. Effective Feb 7, 1990 - [AD 88-25-05](https://openairdocs.org/ad/88-25-05): Tail Rotor Grip Assembly · AST UH-1F, 204B, 205A and 25 more. Effective Dec 13, 1988 Historical (superseded or no longer in force): - [AD 2021-15-52](https://openairdocs.org/ad/2021-15-52) (historical): Main Rotor System · Arrow Falcon Exporters UH-1H, UH-1F, TH-1L and 39 more. Effective Aug 13, 2021 - [AD 2000-22-51](https://openairdocs.org/ad/2000-22-51) (historical): Main Rotor Mast or Trunnion · Arrow Falcon Exporters UH-1H, UH-1F, HH-1K and 33 more. Effective Dec 26, 2000 - [AD 2000-08-53](https://openairdocs.org/ad/2000-08-53) (historical): Main Rotor System · AST UH-1F, HH-1K, TH-1F and 32 more - [AD 97-20-09](https://openairdocs.org/ad/97-20-09) (historical): Vertical fin spar · Arrow Falcon Exporters UH-1H, UH-1F, UH-1F and 33 more. Effective May 28, 1998 - [AD 97-20-09 PL](https://openairdocs.org/ad/97-20-09-PL) (historical): Tailboom Vertical Fin Spar · California Department of Forestry UH-1F, UH-1F, TH-1F and 31 more - [AD 89-17-03](https://openairdocs.org/ad/89-17-03) (historical): Main Rotor Masts · California Department of Forestry UH-1F, TH-1L, UH-1B and 18 more. Effective Sep 5, 1989 ## Information bulletins (advisory) (3) - [SAIB SW-12-38](https://openairdocs.org/saib/SW-12-38): Emergency Push Out Window Retention. Issued Jul 30, 2012 - [SAIB SW-06-64](https://openairdocs.org/saib/SW-06-64): . Issued Aug 17, 2006 - [SAIB SW-05-37](https://openairdocs.org/saib/SW-05-37): . Issued Mar 17, 2005 ## Registered aircraft (1) - [N334WN](https://openairdocs.org/aircraft/N334WN): [Pope Jim D DBA](https://openairdocs.org/faa-owner/POPE%20JIM%20D%20DBA), [Lewiston, ID](https://openairdocs.org/faa-place/ID/Lewiston), built 1962, S/N 62-2097 ## NTSB investigations (1) 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 SEA05CA086](https://openairdocs.org/ntsb/SEA05CA086), Apr 25, 2005: Williams Helicopter UH-1B (N334WN), Uniontown, WA, substantial damage. Probable cause: The pilot's failure to maintain clearance from an object while maneuvering, which resulted in the main rotor blades striking a power pole. The power pole was a factor in the accident. ## FAA accident and incident reports (1) 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 20050425035029A](https://openairdocs.org/incident/20050425035029A), Apr 25, 2005: Bell UH1B (N334WN), Uniontown, WA, Destroyed. (-23) N334WN, a 1962 williams WH-UH1B helicopter was destroyed in a FAR part 137 aerial application accident. This aircraft was operated by leading edge… ## Service difficulty reports (20) As reported by operators and repair stations, by the model named in the report. - [SDR UPX2009F00004](https://openairdocs.org/sdr/UPX2009F00004), May 31, 2009: CONTROL SERVO. LEAKING. ON STARTUP FOR A FLIGHT, MECHANIC NOTICED LARGE PUDDLE OF HYD FLUID UNDER FUSELAGE. CLOSER INSPECTION REVEALED THE LT CYCLIC SERVO WAS LEAKING A LARGE AMOUNT OF - [SDR UPX2009F00003](https://openairdocs.org/sdr/UPX2009F00003), May 31, 2009: SADDLE. CRACKED. ON DAILY INSPECTION, FOUND LT FWD OTBD LANDING GEAR SADDLE CRACKED LONGITUDINALLY AT FILLET AREA. REPLACED SADDLE AND RETURNED TO SERVICE. (K) - [SDR H5O2008F00000](https://openairdocs.org/sdr/H5O2008F00000), Dec 5, 2007: LINER. WORN. PILOT EXPERIENCED COLLECTIVE BOUNCE ON TAKEOFF. INSPECTION OF COLLECTIVE LINERS SHOWED SUFFICIENT AMOUNT OF LINER REMAINING IN THE WEAR AREA. WITH FURTHER INSPE - [SDR 2008FA0000031](https://openairdocs.org/sdr/2008FA0000031), Dec 5, 2007: LINER. WORN. PILOT EXPERIENCED COLLECTIVE BOUNCE ON TAKEOFF. INSPECTION OF COLLECTIVE LINERS SHOWED A SUFFICIENT AMOUNT OF LINER REMAINING IN THE WEAR AREA. WITH FURTHER INS - [SDR H9X2007F00000](https://openairdocs.org/sdr/H9X2007F00000), Dec 1, 2007: HOUSING. DAMAGED. AIRCRAFT WAS RETURNING HOME FROM FLIGHT AND PILOT NOTICED THE PEDALS WERE NOT OPERATING NORMALLY. HE THEN BEGAN CIRCLING THE AIRPORT UNTIL WE DETERMINED THAT TH - [SDR AU000186](https://openairdocs.org/sdr/AU000186), Jan 25, 2000: BLADE. FAILED. (AUS) THIRD STAGE COMPRESSOR DISC AND BLADES DESTROYED. DOWNSTREAM COMPRESSOR DAMAGE. NO DAMAGE TO THE FIRST TWO STAGES. - [SDR 98ZZZX2792](https://openairdocs.org/sdr/98ZZZX2792), Jun 29, 1998: REGULATOR. FAILED. VOLTAGE REGULATOR WILL NOT HOLD VOLTAGE. REMOVED FROM AIRCRAFT AND SENT TO REPAIR. - [SDR 97ZZZX2776](https://openairdocs.org/sdr/97ZZZX2776), May 27, 1997: FIN SPAR. CRACKED. DURING ROUTINE VISUAL INSPECTION WHILE REFUELING, CRACK IN TAILBOOM SPAR CAP WAS DETECTED. MECHANIC STATED NO CRACK WAS NOTED DURING PRE-FLIGHT INDICATING IT FO - [SDR 97ZZZX1991](https://openairdocs.org/sdr/97ZZZX1991), Mar 13, 1997: GRIP. DEFECTIVE. BUSHING FOR PITCH LINK DOES NOT PROTRUDE FLUSH ON BACK SIDE OF GRIP EAR. THEREFORE, SINGLE STEEL WASHER UNDER NUT OF PC LINK BOLT SITS OVER RECESS AND CAN 'DISH - [SDR 97ZZZX1939](https://openairdocs.org/sdr/97ZZZX1939), Mar 13, 1997: BEARING. SPALLED. SPALLING ON BALLS AND OUTER RACE OF BEARING. THIS BEARING IS USED IN SEVERAL DIFFERENT APPLICATIONS IN THE DRIVE TRAIN OF BELL HELICOPTERS. - [SDR GJQR0000098](https://openairdocs.org/sdr/GJQR0000098), Oct 22, 1996: BLADE. DEBONDED. C/W ASB 204-96-48 DUE TO POSSIBILITY OF DEBONDING OF THE MAIN SPAR LEADING EDGE DOUBLER. SEE AD 96-12-26. REPLACED WITH NEW BLADES FROM CSF STOCK. (X) - [SDR GJQR0000097](https://openairdocs.org/sdr/GJQR0000097), Oct 22, 1996: BLADE. DEBONDED. C/W ASB 204-96-48 DUE TO POSSIBILITY OF DEBONDING OF THE MAIN SPAR LEADING EDGE DOUBLER. SEE AD 96-12-26. REPLACED WITH NEW BLADES FROM CSF STOCK. (X) - [SDR UNKN0000096](https://openairdocs.org/sdr/UNKN0000096), Oct 17, 1996: BLADE. CORRODED. PART IS CORRODED. 4TH SET FROM BHT - REORDERED 5TH SET FROM BHT. - [SDR UNKN0000095](https://openairdocs.org/sdr/UNKN0000095), Oct 17, 1996: BLADE. CORRODED. PART IS CORRODED. 4TH SET FROM BHT - REORDERED 5TH SET FROM BHT. - [SDR UNKN0000094](https://openairdocs.org/sdr/UNKN0000094), Oct 16, 1996: BLADE. CORRODED. PART IS CORRODED. 3RD SET FROM BHT - REORDERED 4TH SET FROM BHT. (X) - [SDR UNKN0000093](https://openairdocs.org/sdr/UNKN0000093), Oct 16, 1996: BLADE. CORRODED. PART IS CORRODED. 3RD SET FROM BHT - REORDERED 4TH SET FROM BHT. - [SDR UNKN0000092](https://openairdocs.org/sdr/UNKN0000092), Oct 10, 1996: BLADE. CORRODED. PART IS CORRODED. 2ND SET FROM BHT - REORDERED 3RD SET FROM BHT. (X) - [SDR UNKN0000091](https://openairdocs.org/sdr/UNKN0000091), Oct 10, 1996: BLADE. CORRODED. PART IS CORRODED. 2ND SET RECEIVED FORM BHT - REORDERED 3RD SET FROM BHT. (X) - [SDR UNKN0000090](https://openairdocs.org/sdr/UNKN0000090), Oct 10, 1996: BLADE. CORRODED. PART IS CORRODED. RECEIVED FROM BHT AS IS - REORDERED 2ND SET FROM BHT. (X) - [SDR UNKN0000089](https://openairdocs.org/sdr/UNKN0000089), Oct 10, 1996: BLADE. CORRODED. PART IS CORRODED. REPLACED WITH BLADE FROM BHT. (X) ## STCs that may be installed (OpenAirDocs) (14) 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 SR12332SE](https://openairdocs.org/stc/SR12332SE): Installation of Mechanical Specialties, LLC Human External Cargo (HEC) and non-HEC Hook System. Mechanical Specialties, LLC - [STC SH3744NM](https://openairdocs.org/stc/SH3744NM): Dual Battery Installation. WSH, LLC - [STC SR00026DE](https://openairdocs.org/stc/SR00026DE): Installation of tailboom 24 inch plug extension, commercial style main rotor blades, and rotorhead. Midwest Aerospace TC LLC - [STC SR00073DE](https://openairdocs.org/stc/SR00073DE): Replacement of Lycoming T53-L-13 series powerplant. Midwest Aerospace TC LLC - [STC SR02761LA](https://openairdocs.org/stc/SR02761LA): Installation of UH-1H composite main rotor blades on the UH-1B helicopters. Northern X-Treme Helicopters - [STC SR02492LA](https://openairdocs.org/stc/SR02492LA): Installation of a Helicopter Technology Company main rotor blade assembly. Helicopter Technology Co - [STC SR03408CH](https://openairdocs.org/stc/SR03408CH): Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101-101 or AA-204-310-101-103. Airwolf Aerospace LLC - [STC SR02413LA](https://openairdocs.org/stc/SR02413LA): Installation of an AKV, Inc Exceedence and Trend Monitoring System kit P/N ETM1000. AKV Inc - [STC ST04270AT](https://openairdocs.org/stc/ST04270AT): Install the VTOL ASSALT V3 Windscreen Laminate Kit. VTOL LLC - [STC SR01742NY](https://openairdocs.org/stc/SR01742NY): Installation of extended height landing gear. Dart Aerospace Limited - [STC SR02051LA](https://openairdocs.org/stc/SR02051LA): Installation of a VAn Horn Aviation Tail Rotor Blade. Van Horn Aviation LLC - [STC SR02204LA](https://openairdocs.org/stc/SR02204LA): Installation of an AKV, INC. N1/N2 Cycle Counter, PN UH1T53CC. AKV Inc - [STC SR01298NY](https://openairdocs.org/stc/SR01298NY): Installation of replacement crosstubes P/N D212-664. Dart Aerospace Limited - [STC SR00563NY](https://openairdocs.org/stc/SR00563NY): Installation of Skidtubes and associated saddles. Dart Aerospace Limited ## PMA parts (OpenAirDocs) (21) 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. - [650-430-100-100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190077510020260512112137.0001): MECHANICAL SPECIALTIES, LLC MODEL 650-430-100-100ADVANCED DUEL EXTERNAL CARGO HOOK /ADEC™HOOK SYSTEM. Mechanical Specialties LLC · PMA PQ2180NM · Modification part · Apr 29, 2026 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191057840020220809130912.0001): Aviation Devices & Electronic Components LLC (Av-DEC) · PMA PQ3846SW · May 10, 2022 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125346967420220809102542.0001): Aviation Devices & Electronic Components LLC (Av-DEC) · PMA PQ3846SW · Apr 18, 2022 - [AG844000-15](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID105424422720220408135800.0001): Gasket – UHF/VHF Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Feb 8, 2022 - [AG728000-52](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID109983963720220408135722.0001): Gasket – Satcom Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Jan 26, 2022 - [AG627000-23](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188504655320220408135659.0001): Gasket – Marker Beacon. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Dec 15, 2021 - [AG358000-08](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171617793620220408135812.0001): Gasket – ELT Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Nov 17, 2021 - [AG627000-12](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID160662726920220408140239.0001): Gasket – Marker Beacon Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Nov 17, 2021 - [AG843000-17](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID499609163202111101105060.0001): Gasket - UHF/VHF Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Aug 9, 2021 - [AG358000-07](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID416938804202107271951410.0001): Gasket – ELT Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · Dec 11, 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 - [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 - [AG433000-47](https://drs.faa.gov/browse/excelExternalWindow/E2A5A39A5A171734862582A6006802FD.0001): Gasket - L-Band Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · May 3, 2018 - [AG358000-02](https://drs.faa.gov/browse/excelExternalWindow/AD3E13BFB5D9CCD2862582A6006802FB.0001): Gasket - ELT Antenna. Aviation Devices & Electronic Components, LLC · PMA PQ03846SW · Modification part · May 3, 2018 - [BH200101-1](https://drs.faa.gov/browse/excelExternalWindow/95D883A9D235FBC98525703D00694506.0001): Strake Tail Boom. Boundary Layer Research Inc · Modification part · Oct 20, 2004 - [BH200101-3](https://drs.faa.gov/browse/excelExternalWindow/42662D949C0710798525703D00694512.0001): Strake Tail Boom. Boundary Layer Research Inc · Modification part · Oct 20, 2004 - [BH200101-4](https://drs.faa.gov/browse/excelExternalWindow/3752CD6F58389E848525703D00694519.0001): Strake Tail Boom. Boundary Layer Research Inc · Modification part · Oct 20, 2004 - [BH200101-2](https://drs.faa.gov/browse/excelExternalWindow/2DD9BE8E3046C1A68525703D0069450C.0001): Strake Tail Boom. Boundary Layer Research Inc · Modification part · Oct 20, 2004 - [VTF-030-801](https://drs.faa.gov/browse/excelExternalWindow/CDDCD44A805D6190852570420058F0B1.0001): Spar, Forward Vertical Fin Installation. Global Helicopter Technology Inc · Modification part · Jul 5, 2001 - [VTF-030-801](https://drs.faa.gov/browse/excelExternalWindow/6B1355AFC57404118625736800522DC6.0001): Spar, Forward Vertical Fin Installation. Global Helicopter Technology Inc · PMA PQ0644SW · Modification part · Apr 30, 2001 ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Bell UH-1B](https://openairdocs.org/model/bell-uh-1b): 42 registered aircraft, registry code 1181410 - [Garlick Helicopters UH-1B](https://openairdocs.org/model/garlick-helicopters-uh-1b): 3 registered aircraft, registry code 3740001 - [Hawkins & Powers UH-1B](https://openairdocs.org/model/hawkins-powers-uh-1b): 2 registered aircraft, registry code 1280001 - [Bell-Colonial UH-1B](https://openairdocs.org/model/bell-colonial-uh-1b): 1 registered aircraft, registry code 118141A - [Bell-Sw Florida Avn UH-1B](https://openairdocs.org/model/bell-sw-florida-avn-uh-1b): 1 registered aircraft, registry code 118141B - [Bell / Colony Services UH-1B](https://openairdocs.org/model/bell-colony-services-uh-1b): 0 registered aircraft, registry code 118141D - [Richards Heavylift Helo UH-1B](https://openairdocs.org/model/richards-heavylift-helo-uh-1b): 0 registered aircraft, registry code 118141G - [S M & T UH-1B](https://openairdocs.org/model/s-m-t-uh-1b): 0 registered aircraft, registry code 7700000 - [Wilco UH-1B](https://openairdocs.org/model/wilco-uh-1b): 0 registered aircraft, registry code 9680102 --- 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.