# SDR SWAA2021091404560

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2021
- Submitted: September 14, 2021
- Operation: Air carrier
- Aircraft: [N491WN](https://openairdocs.org/aircraft/N491WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33867
- Aircraft time: 53,758 hours, 31,898 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7830 · Engine Thrust Reverser](https://openairdocs.org/jasc/7830)
- Part: Sleeve
- Condition: Damaged
- Location: Thrust Reverser
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021091404560

## Discrepancy

#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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