Cessna A185 N70391

Summary

On 27 September 2018 at about 23:00 local time, a Cessna A185 registered N70391 was involved in an accident near Fairbanks, Alaska, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

27 September 2018 at 23:00

Classification

Accident

Location

Fairbanks, Alaska, United States

Coordinates

64.7606, -148.5964

Aircraft

Cessna A185

Registration

N70391

Category

Airplane

Year built

1973

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Fairbanks → Fairbanks

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ANC18LA073

Nobody was injured.

The total loss of engine power due to fuel exhaustion.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot reported that, before departure for the 24-minute roundtrip flight, the airplane was refueled; 25 gallons of useable fuel was on board the airplane. The fuel quantity was confirmed with a custom-made fuel dipstick before departure. After landing at a lake, the pilot departed for the return flight. While in level cruise flight, at an altitude of about 1,000 ft above ground level (agl), the engine lost total power. In an effort to restore power, the pilot switched fuel tanks and activated the fuel boost pump to no avail. He performed an emergency descent to a landing on a small lake, during which the airplane impacted trees, the floats separated from the fuselage, and the airplane came to rest partially submerged with substantial damage to the wings and fuselage. Postaccident examination revealed that both left and right fuel tanks were intact; however, the fuel bladders were loose in the tank cavity with wrinkles present. About 2 gallons of fuel were recovered from the fuel tanks. The fuel line between the fuel pump and the fuel control unit was removed, and about 2 tablespoons of fluid that was light blue in color and consistent with 100LL AvGas was recovered. The fuel line between the fuel control unit and fuel manifold was removed, and no fluid was present. Examination of the engine revealed no evidence of malfunctions or anomalies. The airplane was equipped with optional long-range fuel tanks. According to the owner's manual, the total unusable fuel for an aircraft equipped with long-range fuel tanks is 6 gallons. The investigation was unable to determine if the loose fuel bladders were a result of the accident or recovery and what impact they would have had on fuel quantity and unusable fuel. However, given the lack of malfunctions or anomalies noted during the engine examination and the lack of fluid present in the fuel lines, it is likely that the engine lost power due to fuel exhaustion.

Quoted verbatim from the NTSB record.