# SDR DALA2017081406243

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2017
- Submitted: August 14, 2017
- Operation: Air carrier
- Aircraft: N668US
- Make and model: Boeing 747451
- Aircraft serial: 24223
- Aircraft time: 113,941 hours, 13,959 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Switch
- Condition: Dirty
- Location: R3 Door
- Stage of operation: IN
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017081406243

## Discrepancy

PRIOR TO DEPARTURE, THE R3 DOOR OPEN INDICATION ON THE EICAS DOOR PAGE.   TROUBLESHOT IAW FIM 52-71, TASK 812-818.   FOUND SWITCH DIRTY AND HAS EXCESSIVE SEALANT. REMOVED THE SEALANT AND DIRT AND LUBED THE SWITCH PLUNGER. CHECKED THE DOOR INDICTATION ON EICAS,  ALL NORMAL.

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