Service difficulty report · Frame · Boeing 73748E

Difficulty date
April 2, 2016
Submitted
April 25, 2016
Operation
Air carrier
Aircraft
N148AS
Make and model
Boeing 73748E
Aircraft serial
27149
Aircraft time
55,483 hours, 33,640 cycles
Part
Frame
Condition
Cracked
Location
Bs 312
Part time
554,829 hours, 33,640 cycles
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

ELECTRONIC EQUIPMENT COMPARTMENT AT BS 312, LBL 12, WL 199, THERE IS A CRACK 0.750 IN THE FRAME STRAP. REMOVED ALL FASTENERS COMMON TO THE STRAP IAW SRM 51-40-02 AND 51-10-51, REPAIR 4, STOPPED DRILLED END OF CRACK 0.250, IAW SRM 53-10-51, FABRICATED REPAIR PLATE FROM 2024, T3, 0.040, PO AVIM16040400045 IAW SRM 53-10-51. REPAIR 4 ALODINE AND PRIMED REPAIR PLATE IAW AMM 51-21-72 AND AMM 51-21-73. INSTALLED REPAIR PLATE IAW SRM 53-10-51 AND 51-40-02. REPAIR DEMENTIONS 2.40" X 7.15".

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