# SDR UIEA2026071300597

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2026
- Submitted: October 10, 2026
- Operation: Air carrier
- Aircraft: [N419MC](https://openairdocs.org/aircraft/N419MC), registered now
- Make and model: Boeing 747-48EF
- Registry model: [Boeing 747-48EF](https://openairdocs.org/model/boeing-747-48ef) (OpenAirDocs)
- Aircraft serial: 28367
- Aircraft time: 121,274 hours, 20,941 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: None
- Condition: None
- Location: None
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026071300597

## Discrepancy

UNABLE TO CARRY OUT LFEC PER WORK CARD 53-F64K-00-01 ON LTH DRAIN MAST CUTOUT UNDER FAIRINGS STD 42L TO 43L AT BS 870 DUE TO NO DOUBLER INSTALLED.  ONLY TWO DRAIN MASTS INSTALLED (DIFFERENT FROM THE WORK CARD).  PERFORMED HFEC SCAN PER 747 NDT MANUAL D6-7170, PART 6, 51-00-00, PROCEDURE 23 ON FUSELAGE SKIN AREAS SURROUNDING THE DRAIN MAST CUTOUTS, IN LIEU OF 747 NDT MANUAL D6-7170, PART 6, 53-30-00, PROCEDURE 5. NO FURTHER DEFECTS NOTED.

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