Service difficulty report · Panel · Boeing 7377H4

Difficulty date
February 14, 2023
Submitted
March 13, 2023
Operation
Air carrier
Aircraft
N289CT
Make and model
Boeing 7377H4
Aircraft serial
36633
Aircraft time
50,940 hours, 30,659 cycles
Part
Panel
Condition
Debonded
Location
Zn 100 Fus Lower
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

WING TO BODY FAIRING PANEL 191CL HAS A DISBOND<[01] IDENTIFIED PANEL 191CL IAW SRM 53-30-70-0I-1 FIGURE 2 ITEM [8]. BEFORE SANDING AWAY THE PAINT LAYERS IN DISCREPANT AREA; TAP TESTED THE DISCREPANT AREA IAW SRM 53-30-70-1A-1 PARAGRAPH 2.A.(1).(A) WITH NO DISBONDS NOTED. SANDED AWAY MULTIPLE PAINT LAYERS IN THE DISCREPANT AREA IAW AMM 51-21-99-300-802 PARAGRAPH 3.C.(3).(A-D); TAP TESTED AREA AGAIN IAW SRM 53-30-70-1A-1 PARAGRAPH 2.A.(1).(A); WITH NO DISBONDS NOTED. OK TO REFINISH REPAIR AREA.;[02] VERIFIED CORRECTIVE ACTIONS STEP 1.;[03] REFINISHED DISCREPANT AREA IAW AMM 51-21-99-300-802 PARAGRAPH 3.C.(3).;[04] VERIFIED CORRECTIVE ACTION STEP 3. VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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