Grumman G 164B N311AL

Summary

On 12 August 2015 at about 21:00 local time, a Grumman G 164B registered N311AL was involved in an accident near Sac City, Iowa, 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

12 August 2015 at 21:00

Classification

Accident

Location

Sac City, Iowa, United States

Coordinates

42.4258, -94.9617

Aircraft

Grumman G 164B

Registration

N311AL

Category

Airplane

Year built

1977

Operator

Not recorded

Operating rule

Part 137: Agricultural

Purpose of flight

Aerial Application

Phase of flight

Not recorded

Route

Sac City Mun → Sac City Mun

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CEN15LA377

Nobody was injured.

The loss of engine power for reasons that could not be determined based on the available information.

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

Read the full NTSB narrative

The airline transport pilot reported that he changed the engine oil the night before the accident flight. The next day, he performed a normal engine run-up and then departed on the agricultural application flight. The airplane's tail lifted when the airplane reached 60 mph, and the airplane then accelerated to 80 mph. Shortly after getting airborne, the pilot felt that the airplane was not performing as it should be and that the engine power was decreasing. He advanced the engine controls full forward and selected a cornfield for the forced landing. The pilot reported that he thought that the engine's blower/supercharger had failed because the engine did not stop but did seem to lose power. An engine examination was not performed; therefore, the reason for the loss of engine power could not be determined.

Quoted verbatim from the NTSB record.