Service difficulty report · Spar · Cessna 172S

Difficulty date
February 3, 2005
Submitted
March 3, 2005
Operation
General aviation
Make and model
Cessna 172S
Aircraft time
1,815 hours
Engine
Lyc IO360L2A
Propeller
Mcauly 1A170E
Part
Spar
Part number
053200198
Condition
Cracked
Location
Horizontal Stab
Stage of operation
IN
How discovered
V
Nature of condition
W
Precautionary procedure
K

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

What was found

(CAN) FOUND 2 SMALL CRACKS (0.200 INCH LONG) IN THE SPAR CENTER LIGHTNING HOLE FLANGE, ALSO, THE REINFORCEMENT HAS BEEN SLIGHTLY BENT AND A REPLACEMENT IS NECESSARY. SPAR IS THE SAME ONE USED ON THE EARLIER MODEL EXCEPT THAT MFG HAS INCLUDED THE REINFORCEMENT AT THE NEW PRODUCTION AND IT CAN BE BOUGHT SEPARATELY. IAW SEB 94-8, IT WAS POSSIBLE TO REPLACE THAT REINFORCEMENT WHEN THE CRACKS DID NOT EXCEED THE FLANGE RADIUS. UNFORTUNATELY, THAT REPAIR (FOR OUR AIRCRAFT) IS NOT COVERED BY THE SEB 94-8. JUST BLANK OUT THE CRACKS AND PROCEED WITH THE REPLACEMENT OF THE REINFORCEMENT.

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