Service difficulty report · Vapor Barrier · Boeing 73771B

Difficulty date
May 14, 2018
Submitted
May 12, 2022
Operation
Air carrier
Aircraft
N7854B
Make and model
Boeing 73771B
Aircraft serial
29372
Aircraft time
32,721 hours, 22,333 cycles
Part
Vapor Barrier
Condition
Cracked
Location
Rt Wheel Well
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

SUPPLEMENTAL INFORMATION: FOUND 2 CRACKS IN LOWER RIGHT VAPOR BARRIER WING CENTER SECTION SPAR. FIRST LOCATED RBL 37-40 APPROX 13-17 INCHES FROM BOTTOM MEASURING 3.25' IN LENGTH. SECOND AT RBL 41-42 AND 12-15' FROM BOTTOM MEASURING 1.5' IN LENGTH. / APPLIED SEAL TO CRACK PER SRM 57-10-10-1A-2 REPETETIVE ACTION REQUIRED DO A VISUAL INSPECTION OF THE REPAIR AREA FOR FURTHER DAMAGE. IF THE CRACK LENGTH GROWS PAST THE SEAL REFER TO SRM 57-10-10-1A-2 PARAGRAPH 4. IF THE CRACK LENGTH MEETS THE LIMITS IN PARAGRAPH 4; REFER TO SRM 57-10-10-1A-2 PARAGRAPH 2.C;(4). IF THE CRACK LENGTH EXCEEDS THE LIMITS IN PARAGRAPH 4 DO A PERMANENT REPAIR AS GIVEN IN 51-70-04 REPAIR 10.

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