Service difficulty report · Access Panel · Doug MD88

Difficulty date
March 5, 2016
Submitted
March 7, 2016
Operation
Air carrier
Aircraft
N993DL
Make and model
Doug MD88
Aircraft serial
53345
Aircraft time
63,480 hours, 45,809 cycles
Part
Access Panel
Condition
Corroded
Location
Wing
Stage of operation
IN
How discovered
9
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

CORROSION ON COUNTERSINK AND SETTLEMENT AREA AT WING ACCESS PLATE 2301C. CORROSION WAS REMOVED, MEASURE SETTLEMENT WAS ACCOMPLISHED ORIGINAL THICKNESS IS .180" REMAINING THICKNESS IS .172", THEREFORE IT IS WITHIN LIMITS, COUNTERSINKS WERE MEASURED AND MAXIMUM DIAMETER ALLOWABLE IS . 660" AND WAS FOUND 2, COUNTERSINKS OUT OF LIMITS MEASURED .673" AND .679" THEREFORE HOLE AND COUNTERSINKS WERE REWORKED AND MEASURED WITH NR 1 ID 4045" AND COUNTERSINK .727" NR 2 ID .4045" AND COUNTERSINK .733" THEREFORE WITHIN LIMITS OF MAXIMUM HOLE REWORK DIAMETER BUSHING WERE FABRICATED NR 1 OD.4055 AND COUNTERSINK .630" NR 2 .4055" AND COUNTERSINK .636", AREAS AND BUSHINGS WERE TREATED AND BUSHING WAS INSTALLED IAW SRM 51-22-2A, COND II.

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