- Registered owner
- Htf Aviation LLC
- Location
- Kalispell, MT
- Owner type
- LLC
- Serial number
- 31T-7720054
- Type
- Fixed wing multi engine
- Engine
- Turbo-prop
- Airworthiness
- Standard, normal
- Airworthiness date
- July 20, 1977
- Certificate issued
- September 16, 2022
- Expires
- September 30, 2029
- Mode S code
- A31D57
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 43
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1975 | 1 |
|---|---|
| 1976 | 3 |
| 1977 | 1 |
| 1978 | 2 |
| 1979 | 6 |
| 1980 | 5 |
| 1981 | 3 |
| 1982 | 1 |
| 1983 | 1 |
| 1985 | 1 |
| 1993 | 1 |
| 1994 | 2 |
| 1996 | 4 |
| 1997 | 2 |
| 1998 | 3 |
| 1999 | 1 |
| 2000 | 1 |
| 2001 | 2 |
| 2004 | 1 |
| 2005 | 3 |
| 2009 | 1 |
| 2011 | 1 |
| 2012 | 1 |
| 2017 | 1 |
See all 48 ADs
Information bulletins that may apply · 4
Advisory, not mandatory.
NTSB investigations
No NTSB investigations matched to N30DUMatched 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 Piper PA-31T aircraft
FAA incident reports · 1
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Service difficulty reports · 4
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR 97ZZZX1856Bulkhead · crackedDETECTED .50 INCH CRACK IN OUTER AIRCRAFT DOOR SKIN ORIGINATING AT END OF FORWARD SIDE OF DOOR HINGE AND EXTENDING UPWARDS. DISASSEMBLED DOOR AND FOUND THE FOLLOWING PARTS HAD FAILED: 466240-03 BRACKET (ON FORWRD LOWER SIDE) 466550-02 BULKHEAD (ON OUTER FLANSDR 97ZZZX1855Bulkhead · crackedDETECTED .50 INCH CRACK IN OUTER AIRCRAFT DOOR SKIN ORIGINATING AT END OF FORWARD SIDE OF DOOR HINGE AND EXTENDING UPWARDS. DISASSEMBLED DOOR AND FOUND THE FOLLOWING PARTS HAD FAILED: 466240-03 BRACKET (ON FORWRD LOWER SIDE) 466550-02 BULKHEAD (ON OUTER FLANSDR 97ZZZX1854Bracket · failedDETECTED .50 INCH CRACK IN OUTER AIRCRAFT DOOR SKIN ORIGINATING AT END OF FORWARD SIDE OF DOOR HINGE AND EXTENDING UPWARDS. DISASSEMBLED DOOR AND FOUND THE FOLLOWING PARTS HAD FAILED: 466240-03 BRACKET (ON FORWARD LOWER SIDE) 466550-02 BULKHEAD (ON OUTER FLASDR 97ZZZX6230Garlock Seal · unseatedENGINE WAS SHUT DOWN IN-FLIGHT DUE TO DIMINISHING AND FLUCTUATING OIL PRESSURE. INSPECTED ENGINE IAW PWC MM. NO SIGNIFICANT METAL FOUND IN FILTERS OR CHIP DETECTOR. FOUND GARLOCK SEAL ON AFT SCAVENGE PUMP UNSEATED FROM CARRIER. REPLACED GARLOCK SEAL AND RA
STCs that may be installed · 221
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Piper PA-31T
STC SA02571SEInstallation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).STC SA01800SEFabrication and installation of new or replacement of existing instrument panel lights dimmer control.STC SA01861SEFabrication and installation of Landing Light Controller