- Registered owner
- Thomas Aviation LLC
- Location
- Orleans, CA
- Owner type
- LLC
- Serial number
- 151874
- Year built
- 1965
- Type
- Rotorcraft
- Engine
- Turbo-shaft
- Airworthiness
- Restricted, agriculture and pest control, aerial surveying, forest, patrolling, carriage of cargo
- Airworthiness date
- April 11, 1997
- Certificate issued
- January 12, 2010
- Expires
- November 30, 2029
- Mode S code
- A09705
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Lycoming T-53 model are included below.
On this page
Airworthiness directives that may apply · 46
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1971 | 1 |
|---|---|
| 1974 | 2 |
| 1975 | 3 |
| 1978 | 1 |
| 1980 | 1 |
| 1987 | 1 |
| 1988 | 2 |
| 1990 | 2 |
| 1991 | 1 |
| 1994 | 1 |
| 1995 | 2 |
| 1996 | 2 |
| 1997 | 2 |
| 1998 | 2 |
| 1999 | 1 |
| 2000 | 2 |
| 2002 | 6 |
| 2006 | 3 |
| 2009 | 1 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 1 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 1 |
| 2024 | 1 |
See all 52 ADs
Information bulletins that may apply · 3
Advisory, not mandatory.
Historical bulletins · 1
NTSB investigations
No NTSB investigations matched to N137USMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Bell UH-1E aircraft
FAA incident reports
No FAA accident or incident reports matched to N137USMatched by N-number and event date, checked against the reported make and model. Reports from before this aircraft carried the mark are under Earlier aircraft. Reports on Bell UH-1E aircraft
Service difficulty reports · 2
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR QJ5R20017Spar · misinstalledDURING MODIFICATION OF THE TAIL BOOM VERTICAL FIN SPAR USING SPAR KIT, THE INSTALLER IMPROPERLY INSTALLED THE HI LOC FASTNERS WHERE THE 90 DEGREE GEARBOX CASTING ATTACHES TO SIDE RAILS OF SPAR CAPS. OPPOSITE OF STC INSTALLATION INSTRUCTIONS, THE HI LOC COLLARSDR 20010613CW024Spar · crackedFATIGUE CRACK OCCURRED ON RIGHT HAND VERTICAL FIN SPAR MEMBER APPROXIMATELY .5 INCH FORWARD OF THE 90 DEGREE GEARBOX ATTACH FITTING. THIS CRACK WAS DETECTED DURING COMPLIANCE OF AD. PROBABLE CAUSE: FATIGUE. REMOVED AND REPLACED VERTICAL FIN SPAR ASSEMBLY IA
STCs that may be installed · 16
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
See all 16 STCs
Earlier aircraft with this N-number · 1
This aircraft carried N137US before the one registered now. The FAA can assign a mark to another aircraft once a registration is cancelled.