# SDR DL72K991922

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 29, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N417DA](https://openairdocs.org/aircraft/N417DA), registered now
- Make and model: Boeing 727232
- Aircraft serial: 21259
- System (JASC): [3411 · Pitot/Static System](https://openairdocs.org/jasc/3411)
- Part: Hose
- Part number: ZH83230204
- Condition: Leaking
- Location: Rt Instr Panel
- Stage of operation: CR
- Nature of condition: G
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL72K991922

## Discrepancy

CAPT AND F/O AIRSPEED AND ALTITUDE DISAGREES (30-50 KTS SLOWER ON F/O'S) 2,000 FT LWR ON F/O'S.  WHEN F/O WENT TO ALTERNATE, IT TRIPPED THE CADC OFF LINE.  CAPT'S NUMBERS APPEARED CORRECT,  F/O'S APPEARED INCORRECT.  FOUND STATIC LEAK AT FLEX HOSE TO ALT ALERT IND.  REPLACED HOSE AND IND.  REPLACED ADC.  PUMP-UP PITOT-STATIC LEAK CK OK.

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