Cessna 182R N7568T

Summary

On 28 January 2001 at about 23:41 local time, a Cessna 182R registered N7568T was involved in an accident near Renton, Washington, United States. 2 people were 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

28 January 2001 at 23:41

Classification

Accident

Location

Renton, Washington, United States

Nearest airport

Renton Municipal (RNT)

Coordinates

47.4603, -122.2106

Aircraft

Cessna 182R

Registration

N7568T

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Olympia → Renton

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

SEA01LA042

Nobody was injured.

The worn condition of the hydraulic pump gears which resulted in a continuous running pump, subsequent pump motor overheat and eventually the tripping of the pump motor circuit breaker. An additional cause was the pilot's failure to verify that the landing gear were down and locked. A contributing factor was a partially blocked green annunciator light.

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

Read the full NTSB narrative

The pilot departed Olympia in the Cessna 182R en route to Renton, Washington. Shortly after departure he smelled a "faint odor of electrical insulation" but observed no anomalies. Upon arrival at Renton, he lowered the landing gear, and during the landing roll the main landing gear collapsed. Post-crash examination of the aircraft revealed that the hydraulic power pack had worn gears within the pump assembly. This condition would allow the electrically driven pump to operate for longer than normal periods of time and ultimately resulted in the pump overheating and its associated circuit breaker tripping during the flight. Additionally, the green landing gear "down and locked" annunciator light's manual iris was found to be open only 1/16 of an inch. With the iris stopped down to near total closure the pilot would have been unable to see the green light had it been illuminated. With the electrically driven pump out of service due to the tripped circuit breaker, the gear would not have hydraulic pressure to lock into the down position and complete the circuit thus illuminating the green light, and the pilot failed to verify a down an locked condition other than placing the gear handle in the down position.

Quoted verbatim from the NTSB record.