Service difficulty report · Pressure Web · Boeing 737824

Difficulty date
April 15, 2020
Submitted
April 17, 2020
Operation
Air carrier
Aircraft
N78285
Make and model
Boeing 737824
Aircraft serial
33452
Aircraft time
53,129 hours, 18,658 cycles
Part
Pressure Web
Part number
111A11111
Condition
Cracked
Location
Rt Mlg Ww
Stage of operation
IN
How discovered
V
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

B737-57-3-0634 RIGHT CENTER WING REAR SPAR VERTICAL PRESSURE WEB CRACKED BEHING SPOILER HYDROLIC CONTROL VALVE. REF BY PEMCO NR 2759N31. PERFORMED REPAIR ON RH CTR WING REAR SPAR VERT PRESSURE WEB AT STA 663.75 RBL 25.00 TO RBL 45.64 IAW SRM 57-10-10 REP 3 ALT 1, CAT B REPAIR, INSP THRESHOLD 56000FC, INTERVAL INSP 36000FC IAW SRM 57-10-10 REP 3 TABLE 204 DIP 57-DIP TOMC UPDATE: I BELIEVE WE NEED TO USE THE (APB RETROFIT) SRM 57-10-10, RPR 3, ALT 3 REPAIR INSTRUCTIONS SINCE IT COVERS THE AREA NOTED ON YOUR DISCREPANT LOCATION OF RBL 25.00 TO RBL 45.64. SRM 57-10-10, RPR 3, ALT 1, ONLY COVERS THE AREA OF BL 32 TO BL 37. ALTHOUGH, THE INSP REQ TIME LIMITS ARE THE SAME; THE STRUCTURE DETAIL IN COMPARING TABLE 204 AND TABLE 206 ARE SLIGHTLY DIFFERENT. ENTERED IN ERROR, SEE LP# 4868175 FOR CORRECTIVE ACTION