- Registered owner
- Neptune Aviation Services Inc
- Location
- Missoula, MT
- Owner type
- Corporation
- Serial number
- 128422
- Year built
- 1954
- Type
- Fixed wing multi engine
- Engine
- Reciprocating
- Airworthiness
- Restricted, forest
- Airworthiness date
- June 30, 2004
- Certificate issued
- September 13, 1993
- Expires
- April 30, 2028
- Mode S code
- A09C16
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Wright R3350 model are included below.
On this page
Airworthiness directives that may apply · 0
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
No ADs matched this aircraft’s modelsADs on appliances, propellers and installed equipment aren’t matched by model; check those separately.
Information bulletins that may apply
Advisory, not mandatory.
No bulletins matched this aircraft’s models
NTSB investigations · 1
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
FAA incident reports · 2
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Accident 20100626038529ATaxi · Broomfield, COSubsequent to handling emergency where total loss of hydraulics had occured, the PIC was taxiing the aircraft to parking. PIC anticipated some hydraulics available for taxi; however, the system was depleted resulting in overrun of taxiway and ramp area.…Incident 20060210002629IRoll-Out (Fixed Wing) · Prescott, AZ(-23) Left main tire failed on landing rollout. Aircraft departed runway, minimal damage.
Service difficulty reports · 8
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR NI6R201708260046Warning Light · false activationDURING CLIMB OUT FROM FIREFIGHTING DROP, THE CREW NOTICED A REAR OIL SYSTEM CHIP LIGHT ON THE RT RADIAL ENGINE. THE ENGINE WAS SHUTDOWN AND SECURED AND A IFE DECLARED. THE AIRCRAFT RETURNED TO BASE WITH AN UNEVENTFUL LANDING. UPON EXAMINING THE CHIP DETECTSDR NI6R201708230045Oil System · low pressureIN LOADED CRUISE FLIGHT, RIGHT RADIAL ENGINE LOST MANIFOLD PRESSURE FOLLOWED BY A REAR OIL SYSTEM CHIP LIGHT. ENGINE WAS SHUT DOWN, JETTISONED THE LOAD, AND RETURNED TO BASE WITH AN UNEVENTFUL LANDING. IFE WAS DECLARED.SDR NI6R201606090034Tire · rupturedON DESCENT FOR LANDING, THE CREW RECEIVED AN UNSAFE RT MLG INDICATION UPON LOWERING GEAR. THE CREW VISUALLY CHECKED THE GEAR AND SAW THAT IT SHOWED DOWN AND LOCKED. THE CAPTAIN RAN THE EMERGENCY CHECKLIST AND PROCEEDED TO LAND. UPON TOUCHDOWN, HE ELECTED TOSDR NI6R201507060028Sequence Valve · bindingDURING RETURN LEG THE LT RADIAL ENGINE OIL SYSTEM BEGAN INDICATING OVER TEMP READINGS. OTHER ENGINE INDICATIONS APPEARED NORMAL. ENGINE WAS SHUTDOWN AND SECURED FOR REMAINDER OF FLIGHT TO BASE. IFE WAS NOT DECLARED, LANDING WAS UNEVENTFUL.SDR NI6R201503080026Oil System · leakingDURING CRUISE FLIGHT, THE CAPTAIN NOTICED OIL STREAMING FROM THE LT RADIAL ENGINE. FLIGHT DIVERTED TO NEAREST BASE WITH AN UNEVENTFUL LANDING.SDR NI6R201503060025Chip Detector · warning lightLT RADIAL ENGINE REAR OIL SUMP CHIP DETECTOR LIGHT ILLUMINATED AFTER T/O ON CLIMB AT METO POWER SETTING. ENGINE WAS SHUTDOWN AND THE ACFT RETURNED TO BASE WITH AN UNEVENTFUL LANDING.SDR NI6R201408100016Turbine · failedDURING CRUISE RETURNING TO BASE, WHEN THE NR 2 RADIAL ENGINE REAR SUMP METAL CONTAMINATION LIGHT ILLUMINATED, FOLLOWED BY A DEGRADATION OF TORQUE REQUIRING ADDITIONAL MANIFOLD PRESSURE TO MAINTAIN CRUISE POWER, WHITE SMOKE OBSERVED FROM THE INBD POWER RECOVERSDR 2010FA0001058Regulator Valve · out of toleranceMAIN HYD SYS UNLOADER VALVE PN HC5520, SN 235 WAS REMOVED FROM THE ACFT POST-INCIDENT AND WAS BENCH TESTED FOR FUNCTION. NORMAL VALVE PRESSURE RANGE UNLOADS AT 1,675 - 1,725 PSI AND LOADS AT 1,400 - 1,500 PSI. SUBJECT VALVE WAS FOUND TO UNLOAD PRESSURE AT APP
STCs that may be installed
No STCs matched this aircraft’s modelsSTCs change type-certificated designs, and this aircraft isn’t type certificated.
Earlier aircraft with this N-number · 1
This aircraft carried N1386C before the one registered now. The FAA can assign a mark to another aircraft once a registration is cancelled.