TM 1-1520-238-T-4
4–146
4–57.
EXCESSIVE TORSIONAL VIBRATION AND NR DROOP OCCURS DURING FLIGHT –
4–57
(ENGINE 1 NP LAGS BEHIND ENGINE 2 NP DURING RECOVERY MANEUVER) (cont)
6. Check for open between:
J21–35 and P1121–4,
J21–33 and P1121–5,
J21–34 and P1121–6.
Does open exist?
YES
Repair open wire.
Go to paragraph 4–12.
NO
Replace collective potentiometer
position transducer
(TM 1-1520-238-23).
END OF TASK
