Service difficulty report · Support · Boeing 7377H4

Difficulty date
July 9, 2020
Submitted
August 3, 2020
Operation
Air carrier
Aircraft
N488WN
Make and model
Boeing 7377H4
Aircraft serial
33853
Aircraft time
54,363 hours, 32,167 cycles
Part
Support
Part number
146A7500
Condition
Corroded
Location
Bs 727-807
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 TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727 - BS807 LBL21 WL157. REMOVED CORROSION ON MULTIPLE SPOTS LARGEST AREA MEASURED 1.5'L X .9'W AND 0.004' DEEP. ORIGINAL THICKNESS OF 0.040' FLOOR TO SIDEWALL SUPPORT L/H BS727-807; LBL21 FOUND TO BE OUT OF LIMITS PER 53-00-53-1A-2 4.A.(2) FIG 103 DETAIL E. REMOVED FLOOR TO SIDEWALL SUPPORT L/H BS727-807; LBL21 PER SRM 51-40-02-0G-0; INSTALLED NEW FLOOR TO SIDEWALL SUPPORT L/H BS727-807; LBL21 PER SRM 51-40-02-0G DWG 146A7500 AND SPLICE REPAIR AT BS727E+10' LBL21 PER SRM 53-00-53-2R-6 93114U 26JUL20

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