Aborted Engine Start
Condition: During a ground start, an abort start condition occurs.
1 FUEL CONTROL switch
(affected side)………….CUROFF
2 Choose one:
ENG START selector in GND:
Motor the engine for 30 seconds.
ENG START selector
(affected side)…………AUTO
ENG START selector in AUTO:
Go to step 3
3 When N2 decreases below 20%:
ENG START selector (affected side)…….GND
Motor the engine for 30 seconds.
ENG START selector (affected side)……AUTO
Airspeed Unreliable
Condition: The airpeed or Mach indications are suspected to be unreliable.(Items which may indicate Airpeed Unreliable are listed in the Additional Information section.)
Objective: Maintain control using manual pitch and thrust.
1 Check the pitch attitude and thrust.
2 If pitch attitude or thrust is not normal for phase of flight:
Autopolit disengage switch……..Push
Autothrottle disconnect switch…….Push
F/D switches (both)……..OFF
Establish normal pitch attitude and thrust setting for phase of flight
Note: Normal pitch attitude and thrust settings are available in the FLIGHT WITH UNRELIABLE AIRPEED table in the Performance Inflight chapter.
3 Altitude information, vertical speed information, limit EPR, Reference EPR, and EPR bug may
be unreliable.
