# SDR CALA2024041001022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2024
- Submitted: April 10, 2024
- Operation: Air carrier
- Aircraft: [N37313](https://openairdocs.org/aircraft/N37313), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67568
- Aircraft time: 2,960 hours, 1,082 cycles
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Switch
- Part number: MS2452523
- Condition: Transposed
- Location: E/E Comp
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024041001022

## Discrepancy

PER CREW VERBAL AIRCRAFT SPEED WOULD NOT ADVANCE PAST 270 KTS. AIRSPEED WOULD ALSO NOT TRANFER OVER TO MACH. FOUND ALTERNATE VMO/MMO SWITCH IN THE ALTERNATE POSITION. PLACED SWITCH IN NORMAL POSITION AND VERIFIED ADR LABEL 270 BIT, REF AMM 57-31-21-400-802 AND 34-21-00-730-802

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