Service difficulty report · Blocker Door · Boeing 7377H4

Difficulty date
August 1, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Engine
Cfmint CFM567B242
Part
Blocker Door
Condition
Damaged
Location
Thrust Reverser
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

#1 ENG IB TR; #1 BLOCKER DOOR POTTING COMPOUND MISSING/DETERIORATED AT DRAG LINK ATTACH POINT CUTOUT. ; / [01] IDENTIFIED PART IAW 54-30-01-0I-2 FIG 2; ITEM 2.<BR><BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 54-30-01-1A-5 PARA 4B(6).<BR><BR>DAMAGE TO MISSING/DETERIORATED POTTING TO BE REPAIRED IAW SRM 54-30-01-2R-4 PARA 4B.<BR><BR>REMOVED LOOSE POTTING MATERIAL FROM DRAG LINK AREA; CLEANED EXPOSED CORE AREA; PERFORMED GVI AND TAP TEST PERFORMED; NO DISBONDS NOTED; CLEANED SURFACE IAW SRM 54-30-01-2R-4 PARA 4B(1). [07] RESTORED THE FINISH AS GIVEN IN CMM 78-31-24 PARA 5 C (1) STEPS (A)-(E) REF SRM 54-30-01-2R-4 PARA 3; [08] CORRECTION LINE 7 : RESTORED FINISH AS GIVEN IN CMM 78-31-24 REPAIR 2-1 PARA 5 C (1) STEPS (A)-(E) REF SRM 54-30-01-2R-4 PARA 3; [09] VERIFIED CORRECTIVE ACTIONS 4-8; [10] #1 ENGINE I/B T/R #1 BLOCKER DOOR REPAIRED IAW SRM 54-30-01-2R-4; [11] FINAL INSPECTION. REPAIR COMPLETE PER SRM 54-30-01-2R-4.

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