Service difficulty report · Skin · Boeing 75733N

Difficulty date
May 19, 2020
Submitted
May 22, 2020
Operation
Air carrier
Aircraft
N77865
Make and model
Boeing 75733N
Aircraft serial
32589
Aircraft time
58,804 hours, 17,097 cycles
Part
Skin
Part number
112N310215
Condition
Cracked
Location
Nr 1 Pylon
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

DURING NDT HFEC ROTO INSPECTION OF #1 PYLON UPPER DRAG FITTING IAW NDTM PART 6, 51-00-16 CRACK INDICATIONS WERE FOUND AT HOLE #10 - CRACK POSITION :- 4:0''CLOCK; CRACK DEPTH :-0.340"; CRACK SIZE :- 0.040" REF AAR NR 9606672 REPAIRED HOLE #10 PER ECRA 5720-02190A AT #1 PYLON UPPER DRAG FITTING.INITIATE A DTA DIP LOGPAGE TO READ AS FOLLOWS: ON OR BEFORE MAY 4 ,2022 OR THE ACCUMULATION OF 19,197 TOTAL AIRCRAFT FLIGHT CYCLES, WHICHEVER COME FIRST, ACCOMPLISH A ADD EMP:V901512 OF ECRA 5720-03190.PLANNING TO CONTACT ENGINEERING AFTER MARCH 4, 2022 OR ACCUMULATION OF 18,997 TOTAL AIRCRAFT FLIGHT CYCLES BUT BEFORE APRIL 4,2022 OR THE ACCUMULATION OF 19,097 TOTAL PERMANENT REPAIR PER PART 3 OF THE LATEST REVISION AIRCRAFT FLIGHT CYCLES FOR THE PERMANENT REPAIR INSTRUCTIONS

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