Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
August 11, 2023
Submitted
September 13, 2023
Operation
Air carrier
Aircraft
N912WN
Make and model
Boeing 7377H4
Aircraft serial
36621
Aircraft time
50,939 hours, 30,749 cycles
Part
Attach Angle
Part number
UNKNOWN
Condition
Cracked
Location
Zn 200 Fus Top
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

WING CENTER SECTION CABLE INTERCOSTAL ATTACH ANGLE IS CRACKED AT BS 685+11; RBL 24; WL 203<[01] NO DAMAGE LIMITS GIVEN IN SRM; PART IS REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR 9; FABRICATED NEW BRACKET FROM BAC1490-2782 7075-T0 CLAD .050 LOT# 1482272-2 HEAT TREATED TO T73 ON SWA PO# 857530 22 FEB 22 IAW BOEING DWG 273A9112 LOCATED AND DRILLED IAW SRM 51-40-05-0G-0 APPLIED CHEMICAL CONVERSION COAT AND PRIMED IAW SRM 51-20-01-0G-0 OK TO INJSTALL;[02] REMOVED CRACK DAMAGED BRACKET FROM BS 685+11 RBL 24 WL 203 IAW SRM 51-40-02-0G-0;[03] VERIFIED APPLICABILITY OF SRM 51-10-02-0G-0 AND SRM 51-40-02-0G-0;[04] VERIFIED CORRECTIVE ACTION #1; 3;[05] INSTALLED NEW BRACKET AT BS 685+11 RBL 24 WL 203 IAW SRM 51-40-02-0G-0 AND BOEING DWG 273A9112;[06] VERIFIED CORRECTIVE ACTION #5<BR>VERIFIED MEASUREMENTS

More about the Boeing 737-7H4