# SDR P5CA2015060100046

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2015
- Submitted: June 1, 2015
- Operation: Air carrier
- Aircraft: [N452PA](https://openairdocs.org/aircraft/N452PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30810
- Aircraft time: 62,742 hours, 10,323 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 4040800911
- Part serial: 31023146
- Condition: Malfunctioned
- Location: Right
- Part time: 9,813 hours, 1,622 cycles
- 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/P5CA2015060100046

## Discrepancy

FLIGHT DIRECTORS ON BOTH SIDES FAILED DURING TAKEOFF AT 200 FT AGL.  CYCLED BOTH SWITCHES AND FDS REGAINED OPERATION.  FOUND CMC MESSAGE 22877 AND FOLLOWED FIM TASK 22-11, TASK C52.   AIR DATA COMPUTER RT REPLACED IAW AMM 34-12-01/401 AND OPS CHECKED GOOD IAW AMM 22-10-00-715-071.

---
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.