# SDR QMLA202120820005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2021
- Submitted: February 8, 2021
- Operation: Air carrier
- Aircraft: [N504LH](https://openairdocs.org/aircraft/N504LH), registered now
- Make and model: Urocop EC135T2
- Registry model: [Urocop EC135T2](https://openairdocs.org/model/eurocopter-deutschland-ec135t2) (OpenAirDocs)
- Aircraft serial: 0382
- Aircraft time: 5,910 hours, 19,669 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Angle
- Condition: Cracked
- Location: G/B Deck
- Part time: 5,910 hours, 19,669 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA202120820005

## Discrepancy

DURING 400 HOUR INSPECTION FOUND A CRACK APPROX. 1.5" LONG ON THE R/H FORWARD MAIN GEARBOX DECK AT THE TRANSITION TO THE CABIN ROOF ABOVE THE #4 BULKHEAD. THE CRACK IS LOCATED IN THE RADIUS OF THE DOUBLER THAT MAKES THE TRANSITION. REPAIR REQUIRES DOUBLERS IAW EC-135 STANDARD REPAIR MANUAL SRM 51-71-53,8-7.

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