Service difficulty report · Tail Cone · Boeing 7377H4

Difficulty date
June 28, 2021
Submitted
July 30, 2021
Operation
Air carrier
Aircraft
N751SW
Make and model
Boeing 7377H4
Aircraft serial
29803
Aircraft time
74,739 hours, 44,231 cycles
Part
Tail Cone
Condition
Delaminated
Location
Aft
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

TAIL CONE HAS TWO AREAS OF DELAM ON THE RIGHT SIDE ; DELAMINATION / [01] MEASUREMENTS; [02] CLEANSED DAMAGE AREA AND PREPARED AREA FOR REPAIR ON R/H SIDE OF OUTER SKIN OF TAIL CONE AS PER B737 SRM 51-70-04-2R-1 OK TO INSTALL REPAIR; [03] ON STEP 2 DAMAGE LOCATION IS AT STA. 1167 ;11 INCHES FROM FWD. EDGE OF TAIL CONE AND 17 INCHES FROM BOTTOM CENTER THIS REPAIR WILL BE CALLED REPAIR A; [04] SECOND DAMAGE AREA IS AT STA. 1179 ;23 INCHES FROM FWD. EDGE OF TAIL CONE AND 12 INCHES FROM BOTTOM CENTER . PERFORMED TAP TEST FOUND NO DELAMINATION ONLY DETERIORATED OUTER PAINT AS PER B737 NDTM 51-05 -01 THIS REPAIR WILL BE CALLED REPAIR B; [05] VERIFIED STEPS # 1; 2; 3 AND 4; [06] OK TO INSTALL REPAIR A; [07] REPAIRED DAMAGE A ON R/H SIDE OUTER SKIN OF TAIL CONE AS PER B737 SRM 51-70-04-2R-1 MATERIALS USED PO# 1150387 & PO# 1715972 PERFORMED TAP TEST ON REPAIRED AREA FOUND NO DELAMINATION AD PER NDTM 51-05-01 SECTION 5; [08] VERIFIED STEP 7; [09] PAINTED AREA AT STA 1179; 23 INCHES FROM FWD EDGE OF TAIL AND 12 INCHES FROM BOTTON CENTER AND AREA AT STA 1167 11 INCHES FROM FWD EDGE OF TAIL CONE AND 17 INCHES FROM BOTTOM CENTER REF B 737-700 AMM 51-21-73-370-803; [10] PAINT WORK WAS ACCOMPLISHED BY TECHNICIAN VICTORINO ANASTACIO MENDOZA EMPLOYEE # 2381; [11] VERIFIED PAINT STEP 9 AND 10.

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