Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
May 18, 2019
Submitted
March 8, 2022
Operation
Air carrier
Aircraft
N437WN
Make and model
Boeing 7377H4
Aircraft serial
29832
Aircraft time
56,261 hours, 32,857 cycles
Part
Stiffener
Condition
Corroded
Location
Horizontal Stab
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*** R/H HORIZONTAL STIFFENER UPPER SURFACE; BS714.5; RBL63; WL202 / CORROSION ON R/H HORIZONTAL STIFFENER BS 714.5 RBL 63 WL 202 FOUND TO BE OUT OF LIMITS DUE TO NO ALLOWABLE LIMITS GIVEN IN SRM. REPAIRED PER ATS ER 19-03270 REV IR AND EA 1-753-34959 REV IR.

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