# SDR AALA20150313006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2015
- Submitted: March 17, 2015
- Operation: Air carrier
- Aircraft: N601AN
- Make and model: Boeing 757223
- Aircraft serial: 27052
- Aircraft time: 62,833 hours, 21,660 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 4040800912
- Part serial: 94104186
- Condition: Failed
- Location: Zone 100
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20150313006

## Discrepancy

DURING TAKEOFF FIRST OFFICERS DISPLAY INDICATED NO AIRSPEED AT 80 KNOT CHECK.  TAKEOFF ABORTED AT 85 - 90 KNOTS. R & R RT AIR DATA COMPUTER.  PERFORMED CHECKS IAW AMM 34-12-01.  SYS CHECKED NORMAL.

---
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.