Service difficulty report · Sleeve · 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
Sleeve
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; INNER SLEEVE POTTING COMPOUND MISSING/DETERIORATED AT LE'S CUTOUTS IN BETWEEN EACH BLOCKER DOOR. ; / [01] IDENTIFIED PART IAW 54-30-01-0I-2 FIG 2; ITEM 1. <BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 54-30-01-1A-2 PARA 4B(7). <BR>DAMAGE TO MISSING/DETERIORATED POTTING TO BE REPAIRED IAW SRM 54-30-01-2R-6 PARA 4B.<BR>FOUND ADDITIONAL LOOSE POTTING MATERIAL COMMON TO BLOCKER DOOR CUTOUTS; REMOVED LOOSE POTTING MATERIAL FROM BETWEEN EACH BLOCKER DOOR AND BLOCKER DOOR CUTOUT AREAS; CLEANED EXPOSED CORE AREA; PERFORMED GVI AND TAP TEST PERFORMED;<BR>NO DISBONDS NOTED; LIGHTLY ABRADED EXISTING POTTING; CLEANED SURFACE IAW SRM 54-30-01-2R-6 PARA 4B(1-7).<BR>OK TO POT ALL AREAS OF MISSING POTTING.;; [07] COMPLETED FINISH RESTORATION & FOD REMOVAL IAW SRM 54-30-01-2R-6 PARA 4 B STEPS 14 & 15; [08] CORRECTION LINE 5: ADD SOPM 20-50-19 AS GIVEN IN CMM 78-31-24 REPAIR 2-1 PARA 5 C (1) (E); [09] VERIFIED CORRECTIVE ACTIONS 3-8; [10] #1 ENGINE I/B T/R TRANSLATING SLEEVE DAMAGED POTTING COMPOUND AT THE L/E WAS REPAIRED IAW SRM 54-30-01-2R-6.; [11] FINAL INSPECTION. INNER SLEEVE POTTING COMPOUND REPAIRED PER SRM 54-30-01-2R-6.

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