# SDR DHL2001721001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2001
- Submitted: April 18, 2001
- Operation: Air carrier
- Aircraft: N721DH
- Make and model: Boeing 727228
- Aircraft serial: 19545
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Unit
- Condition: Malfunctioned
- Location: Autopilot
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DHL2001721001

## Discrepancy

BOTH AUTOPILOT ON - IN MAN MODE/HDG SEL INGAGED USING HDG BUG TO TURN AND CLIMB AT SAME TIME - A/C BANKED 30 DEG AND THE PITCH WOULD TEMPORARILY BECOME ERRATIC PITCHING UP THEN DOWN +/- 5-7 DEG.   RE RACKED PITCH CHANNEL SYSTEM.  OPS GOOD WITH COMPANY EQUIPMENT IAW 22-11-01.  STATUS-CLOSED.

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