Service difficulty report · Skin · Boeing 737924ER

Difficulty date
August 29, 2023
Submitted
October 9, 2023
Operation
Air carrier
Aircraft
N75425
Make and model
Boeing 737924ER
Aircraft serial
33460
Aircraft time
48,635 hours, 17,112 cycles
Part
Skin
Part number
141A372141
Condition
Damaged
Location
Sta 216 To 226
Stage of operation
IN
How discovered
O
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

REMOVED DAMAGED UPPER SKIN @ S-24-R AND APROX STA 216 TO 226 PER AVO11125 STEP 3. C/W AVO11125 REV A. VERIFIED REMOVED DAMAGED UPPER SKIN S-24-R AND APROX STA 216 TO PERFORMED 737 NDT PART 6, 51-00-00 TO VERIFY CRACK FREE AREA OF 226 PER AVO11125 STEP 3 IAW AV011125, AND REMOVED EXISTING DMG CUT OUT IAW AVO 11141 SREP 2, NO CRACKS FOUND. ON UPPER SKIN AT APROX STA 216-229 S-24-R PER AVO11141 STEP 2. REMOVED EXISTING DMG ON UPPER SKIN AT APROX STA 216-229 @ S-24-R NEED TO PERFORM NDT OF DMG REMOVAL PER AVO 11141 STEP 2. PER AVO11141 STEP 2 MATERIAL ID FOR UPPER SKIN REPAIR REF AVO11141 PAGE 3 SUB STEP C1 IS AS FOLLOWS: 2024-T3 .040 / PO# 9006951 FOR -1 DOUBLER AND -4 FILLER 2024-T3 .063 / PO# 2407996 FOR -2 TRIPLER AND -3 FILLER 2024-T3 .032 / PO# 2677856 FOR -5 FILLER VERIFIED MATERIAL ID FOR UPPER SKIN REPAIR REF AVO11141 PAGE 3 SUB STEP C1 IS AS FOLLOWS: 2024-T3 .040 / PO# 9006951 FOR -1 DOUBLER AND -4 FILLER 2024-T3 .063 / PO# 2407996 FOR -2 TRIPLER AND -3 FILLER 2024-T3 .032 / PO# 2677856 FOR -5 FILLER . PER AVO11141 REV.A NEED TO COMPLY WITH STEPS B.4 AND B.5 HFEC HOLE PROBE AND COUNTERSINK INSPECTION OF EXHISTING FASTENER HOLES COMMON TO REPAIR. ACP. RII INSPECTION IAW GMM 09-25-05 & AVO11141 REV A. ACP. OPEN HOLE HFEC IAW 737NG NTM PART6 51-00-00 PROCEDURE 16, & COUNTERSINKS IAW NTM PART 6 53-30-00 PROCEDURE 3. OF ALL EXISTING FASTENER HOLES COMMON TO POWER- EDIT TO PREVIOUS UPDATE... PER AVO11141 REV.B NEED TO COMPLY UPDATE TO PREVIOUS EDIT.