- Registered owner
- Neptune Aviation Services Inc
- Location
- Missoula, MT
- Owner type
- Corporation
- Serial number
- 11689
- Year built
- 1981
- Type
- Fixed wing multi engine
- Engine
- Turbo-prop
- Airworthiness
- Standard, normal
- Airworthiness date
- September 10, 1981
- Certificate issued
- February 9, 2025
- Expires
- February 29, 2032
- Mode S code
- AB8197
Rockwell International 690CTCDS 2A4Airframe · Rockwell International 690CEngine modelAiResearch TPE331-5&6SER
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 15
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1978 | 1 |
|---|---|
| 1979 | 1 |
| 1984 | 1 |
| 1988 | 1 |
| 1994 | 1 |
| 1995 | 3 |
| 1996 | 1 |
| 1998 | 5 |
| 1999 | 1 |
| 2000 | 1 |
| 2005 | 2 |
Airframe · Rockwell International 690C
AD 2005-18-20"FASTprop" propeller de-icersAD 2005-01-19Mode S transpondersAD 2000-02-30Airframe Pneumatic Deicing BootsInformation bulletins that may apply · 1
Advisory, not mandatory.
Airframe · Rockwell International 690C
SAIB 2023-14Landing Gear Retract/Extend SystemNTSB investigations
No NTSB investigations matched to N840TWMatched 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 Rockwell International 690C aircraft
Investigations on N840TW not matched to an aircraft · 2
They name N840TW, but no registry record covers the date, the aircraft registered then was built later, or the investigation describes another aircraft.
NTSB DEN83IA119Incident · No injuriesIncident investigationFinal reportBoeing 727-31H · Colorado Spring, COWhile starting to taxi from the gate for departure, the acftstruck the jetway with the left wing. The captian stated that he was following the ground guide. The ground guide stated that this was the first time he had guided an acft & he had never recieved any…NTSB DCA79AA016Accident · Minor injuriesClosedBoeing 727-31 · Saginaw, MI
FAA incident reports
No FAA accident or incident reports matched to N840TWMatched 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 Rockwell International 690C aircraft
Reports on N840TW not matched to an aircraft · 3
They name N840TW, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.
Incident 19870119005759IBoeing 72731 · St Louis, MOA system hydraulic fluid lost after takeoff. Aircraft returned to the field. A leaking flap motor was replaced.Incident 19830523030499IBoeing 72731 · Colorado Spring, COStruck jetway with left wing tip. Pilot thought he had clearance. Flagman forgot the stop signal.Incident 19800506051069IBoeing 72731 · St Louis, MOLanded safely with gear unsafe light on. Maintenance replaced faulty switch.
Service difficulty reports · 1
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
STCs that may be installed · 129
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Rockwell International 690C
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