Service difficulty report · Structure · Boeing 7377H4

Difficulty date
July 29, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Structure
Condition
Corroded
Location
Bs 687 Lbl 63
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 INNER CHORD AT PASSENGER CABIN BS687 LBL63 WL208. ; / [01] REMOVED CORROSION ON INNER CHORD AT BS. 687 LBL 63 WL 208 IN A 1'X1' X.005 FOUND TO BE OUT OF LIMITS DUE TO NO ALLOWABLE LIMITS IN SRM; [02] REMOVED 1 EACH FASTENER AT BS 687 LBL 63 WL 208 PER SRM 51040-02-0G-0; [03] CORRECTION ITEM 2 FASTENER REMOVAL REFERENCE SRM51-40-02-0G-0; [04] CORRECTION ITEM 1 CORRECTION REMOVAL WAS PER SRM 51-10-02-OG-0 STEP 15; [05] LIMIT STATEMENT:INNER CHORD DAMAGE BS687 LBL63 WL208 FOUND TO BE OUT LIMITS DUE TO NO ENTRIES FOUND ON SRM PART TO BE REPLACE I.A.W SRM 51-10-02-0G-0 PAR 9.C; [06] VERIFIED NO LIMITS IN THE SRM- PART TO BE REPLACED; [07] INNER CHORD TO BE REPLACED ON CARD # TTG8Q005ZHW9; [08] VERIFIED PART REPLACEMENT ON TTG8Q005ZHW9; [09] CORRECTED CORROSION LEVEL FOR ITEM 21 TO BE LEVEL 2; [10] CERTIFIED

More about the Boeing 737-7H4