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SECTION 9
SUPPLEMENT 8
SECTION 3 - EMERGENCY PROCEDURES (continued)
HEADING OR COURSE KNOB FAILURE
Red flags will appear on the heading bug, or on the head and tail of the
course pointer as appropriate. Autopilot will not couple HDG, NAV, or APR,
but can be used for attitude or altitude hold.
EHI 40 DISPLAY UNIT FAILURE
A blank display indicates a power failure to the display unit. Pull and reset
the EHSI circuit breaker. If display does not return, continue flight by
reference to alternate instruments. Autopilot will not couple HDG, NAV, or
APR, but can be used for attitude or altitude hold. If display returns, verify
displayed data and continue flight.
YELLOW FAN ANNUNCIATION
Yellow fan annunciation indicates a failure of the symbol generator
cooling fan. If a fan failure occurs in flight, continue operation with caution,
verifying the validity of displayed data by reference to alternate instruments.
Although a symbol generator failure is unlikely, consideration should be given
to securing power to the symbol generator 30 minutes after failure and flying
by reference to alternate instruments. The symbol generator can be disabled by
pulling the EHSI circuit breaker.
REPORT: VB-1710
9-48, 6 of 26
PA-46-350P, MALIBU
ISSUED: FEBRUARY 23, 1999
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