# SDR 98FDEA00646

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N235FE
- Make and model: Boeing 727247
- Aircraft serial: 21329
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: HG480B13
- Condition: Failed
- Location: E & E Comp
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98FDEA00646

## Discrepancy

98-246 ON CLIMB-OUT, LOST CAPT AIRSPEED CAPT ALT, GPWS, ALT ALERTER, TRANSPONDER NR 1, & MODE C IN BOTH TRANSPONDER & AUTOPILOT.  REMOVED AND REPLACED DADC PER BOEING 727 MM CHAPTER 34-12-11.  OPER CKS NORM.  AUTOPILOT DOWNGRADED TO CK CAT 2 STATUS.  A/C DOWNGRADED TO NOT CAT 2 STATUS.

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