# SDR 20010430CW011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2001
- Submitted: April 30, 2001
- Operation: Air carrier
- Aircraft: N360LJ
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 360
- Engine: Garrtt TFE731*
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Module
- Part number: 42230510141
- Part serial: 330
- Condition: Defective
- Location: Altimeter
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20010430CW011

## Discrepancy

DURING A PREFLIGHT, NR 1 ALTIMETER C/B TRIPPED AND WOULD NOT RESET.  AFTER TROUBLESHOOTING FOUND SDC MODULE DEFECTIVE WITH MOISTURE.   THE TRIP WAS MOVET TO A LR55-119.  REPLACED SDC MODULE, REPAIRED AVIONIC BOY SEDL.  TESTED D/C FOUND OK.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.