Service difficulty report · Web · Boeing 7377H4

Difficulty date
November 29, 2021
Submitted
December 27, 2021
Operation
Air carrier
Aircraft
N455WN
Make and model
Boeing 7377H4
Aircraft serial
32462
Aircraft time
58,698 hours, 34,771 cycles
Part
Web
Condition
Corroded
Location
Aft Cargo Bay
Stage of operation
UK
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

ACD SUB THRESHOLD CORRODED AT BS 794, 794+8, BS807+13 &+17, RBL 26. REMOVED LIGHT SURFACE CORROSION AT ACD SUB THRESHOLD IAW SRM 51-60-15-0I-1. UT THICKNESS TESTED BLENDED AREA IAW NDT PART 451-00-00 PROCEDURE 2. EVALUATED DAMAGE ON THRESHOLD WEB MORE CORROSION WAS FOUND. REMOVED CORROSION ON THRESHOLD WEB IAW SRM51-10-02-0G-0 FOUND TO BE OUT OF LIMITS. REWORKED AREA IAW SRM 53-00-53-1A-2, ALLOWABLE DAMAGE PARAG. 4.A (2) DETAIL (E) FIG 103. LOCATED AND DRILLED NEW SUB THRESHOLD IAW SRM 51-40-05-0G-0. INSTALLED ON CARD TTG8Q004E31T.

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