Service difficulty report · Spar · Cessna 172H

Difficulty date
January 31, 2005
Submitted
March 22, 2005
Operation
General aviation
Aircraft
N4989R
Make and model
Cessna 172H
Aircraft serial
17256343
Engine
Cont O300D
Propeller
Mcauly 1C172EM
System (JASC)
5711 · Wing Spar
Part
Spar
Part number
052340051
Condition
Cracked
Location
Rt Wing Ib
Stage of operation
IN
How discovered
B
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING A BORESCOPE INSPECTION, A CRACK WAS FOUND IN THE RT REAR SPAR AT THE IB FLAP TRACK ATTACH POINT. PROBABLE CAUSE IS FATIGUE. THIS IS A VERY HIGH TIME AIRCRAFT WITH OVER 12,000 HOURS TT. IT HAS ALSO BEEN USED AS A FLIGHT TRAINER FOR ITS ENTIRE LIFE. (K)

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