Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
May 24, 2022
Submitted
June 10, 2022
Operation
Air carrier
Aircraft
N8630B
Make and model
Boeing 7378H4
Aircraft serial
42521
Aircraft time
27,694 hours, 12,732 cycles
Part
Intercostal
Part number
147A5650
Condition
Corroded
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 FLOOR SUPPORT BS 947+3 LBL 26 WL 208 / [01] DAMAGE ON THE INTERCOSTIAL FOUND TO BE NOT TO BE WITHIN ALLOWABLE DAMAGE PER SRM 51-60-51-01A-1; REMOVED INTERCOSTIAL PER SRM 51-10-02-0G-0 STEP 9 AND SRM 51-40-02-0G-0;[02] DAMAGE ON THE INTERCOSTIAL FOUND TO BE NOT TO BE WITHIN ALLOWABLE DAMAGE PER SRM 51-60-51-01A-1; REMOVED INTERCOSTIAL BS 947-986 LBL 26 WL 208 PER SRM 51-10-02-0G-0 STEP 9 AND SRM 51-40-02-0G-0;[03] EVALUATED CORROSION ON FLOOR SUPPORT STA 947+3; LBL 26; WL 208. FOUND TO BE OUT OF LIMITS DUE TO NO ALLOWABLE LIMITS PER SRM 53-60-51-1A-1. SRM 51-10-02-0G-0 IS APPLICABLE REPLACEMENT OF PART.;[04] VERIFIED CORROSION EVALUATION.;[05] REMOVED DAMAGED FLOOR SUPPORT STA 947-967; LBL 26; WL 208 PER SRM 51-40-02-0G-0.;[06] VERIFIED CORRECTIVE ACTIONS 1-5.;[07] LOCATED AND DRILLED NEW FLOOR SUPPORT STA 947-967; LBL 26; WL 208 I.A.W BOEING DWG 147A5650 AND SRM 51-40-05-0G-0 OK TO INSTALL;[08] VERIFIED NEW FLOOR SUPPORT AT STA 947-967; LBL 26; WL 208 DRILLED I.A.W BOEING DWG 147A5650 AND SRM 51-40-05-0G-0.<BR>OKAY TO INSTALL FLOOR SUPPORT GIVEN.;[09] INSTALLED NEW FLOOR SUPPORT AT STA 947-967; LBL 26; WL 208 I.A.W BOEING DWG 147A5650 AND SRM 51-40-02-0G-0.ALL REMOVED AND REPLACED PROCESS COMPLETED;[10] VERIFIED CORRECTIVE ACTION 9;[11] VERIFIED ALL STEPS ACCOMPLISHED

More about the Boeing 737-8H4