SEA00LA177

NTSB accident investigation · Cessna 172P · Auburn, WA · September 3, 2000

Accident · No injuriesLimited investigationFinal report
Date
September 3, 2000, 00:00 local (07:00 UTC)
Place
Auburn, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Unknown
Aircraft
N531PCCessna 172P
Weather
Not reported
Status
Completed · report May 18, 2001
Report
Approved by Office Director
Case key
51330

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

Damage to aircraft under unknown circumstances.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Miscellaneous/otherUnknown
Reason for occurrence undeterminedCause

Analysis

The owner/operator of the rental aircraft reported that during a routine maintenance inspection, the structure of the aircraft was found damaged. The operator does not know when or by which pilot damaged the aircraft.

Factual narrative

On or about September 3, 2000, at an unknown time, a Cessna 172P, N531PC, registered to and operated by Auburn Flight Service, was substantially damaged at an unknown location, and by an unknown pilot. The Chief Flight Instructor from the operator reported that the aircraft is used for rental purposes and has flown 99 hours since the last maintenance inspection dated July 25, 2000. On about September 4 or 5, 2000, a pilot reported that during the pre-flight inspection, he noted wrinkles in the skin on a wing. A mechanic looked at the aircraft and reported that it was okay for flight. On September 7, 2000, the aircraft went in for the scheduled 100-hour inspection.

During the maintenance inspection, maintenance personnel reported that three ribs in the left wing were buckled, the spar was damaged, and the upper and lower skin sections were buckled and oil canned. The cabin top assembly skin was buckled and wrinkled. The horizontal stabilizer forward spar and reinforcement were severely buckled and cracked in the center section.

Aircraft

Registration
N531PC
Reported as
Cessna 172P
Category
Airplane
Serial number
17274698
Airframe hours
2,461
Engine
Lycoming O-320-D2J, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Registered owner
Auburn Flight Service Inc.
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
100 hour · July 25, 2000 · 99 hours before
Flight plan
Unknown

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Medical
Unknown, Unknown

Weather

Conditions
Not reported

Other investigations on N531PC · 1

Matched to the same aircraft by N-number and date.