# SDR UIEA2011103100633

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2011
- Submitted: October 31, 2011
- Operation: Air carrier
- Aircraft: [N458MC](https://openairdocs.org/aircraft/N458MC), registered now
- Make and model: Boeing 747446
- Aircraft serial: 26356
- Aircraft time: 59,026 hours, 12,592 cycles
- Engine: Ge CF680C2B1F
- System (JASC): [7830 · Engine Thrust Reverser](https://openairdocs.org/jasc/7830)
- Part: Insulation
- Condition: Delaminated
- Location: Thrust Reverser
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2011103100633

## Discrepancy

DURING WALKAROUND, MX FOUND THE NR 4 RT T/R INSULATION DAMAGE AS FOLLOWS (REF FIG 1)  DELAMINATIONS AND PUNCTURE OF INSULATION FROM HONEYCOMB STRUCTURE IS AS FOLLOWS: DELAMINATED AREA IS 19.0" FROM FRAME TO FRAME AND 35.0" TOP TO BOTTOM.  THE PUNCTURE IN THE MIDDLE IS 2.0" LONG X .7500" WIDE.  THE SECOND DELAMINATED AREA ON BOTTOM IS 4.0" X 6.0" SIZE. (DISPOSITION WAS MADE TO PERFORM A TIME LIMITED REPAIR AS DESCRIBED IN PART 1 WORK INSTRUCTIONS, VISUAL INSPECTIONS AFTER EVERY (2) FLIGHT CYCLES, AND PERMANENT REPAIR WITHIN 10 CALENDAR DAYS.)

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