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Sub-section - 4.05
ABNORMAL PROCEDURES
FAA Approved
Original Issue: Feb 28, 2006
Hawker 850XP Pro Line 21 Airplane Flight Manual
SINGLE INVERTER FAILURE
All AC systems are available
Do Not Attempt To Reset If INV 1 FAIL or INV 2 FAIL Annunciators Illuminate.
DOUBLE INVERTER FAILURE
If Both INV 1 FAIL and INV 2 FAIL Annunciators Illuminate, A Reset of One Inverter May Be
Attempted If The Flight Condition Dictates.
If the inverter does not reset, the following systems or components will be inoperative:
• AOA indexer lights
• AOA indicator
• Autopilot Pitch Trim
• Cabin Pressurization Fan Venturi (Do not introduce pressurization air on the ground from
either the APU, if installed, or the Main Air Valves).
MWS DIMMER FAIL
MWS NORM/DIM OVRD switch.................................DIM OVRD
and
ELECT
FAIL
INV 1
FAIL
INV 2
or
XS 1
FAIL
XS 2
FAIL
INV 1
FAIL
INV 2
FAIL
ELECT
and
• Ice Detector (Avoid flight in icing conditions)
• Mach Trim
• Stall IDENT 1 and Stall IDENT 2
DIM
MWS
FAIL
For Training Purposes Only