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will be displayed and the course deviation indicator will be “centered.” This
will give the pilot an “on course” and/or “on glideslope” indication regardless of
the aircraft’s actual position.
This type of failure will normally be revealed by a cross check of alternate
navigation information (FMS position, the other VHF NAV, ADF, DME, etc.)
A suspect system can be checked by tuning to a local VOR and rotating the
course selector and observing accurate deflection of the course deviation bar. If
no deflection is observed, the receiver should not be used. Suspect glideslope
information can be verified by checking crossing altitudes from the approach
chart and by reference to another glide slope receiver. If necessary, coordinate
alternate approach procedures with ATC (non-precision, ASR etc.).
* * * *
737
Flight Manual
Continental
FUEL
Sec. 2.12 TOC-1
Rev. 11/15/02 #41
2.12 – FUEL
TABLE OF CONTENTS
BCD CONFIG................................................................................ 1
CROSSFEED SELECTOR INOPERATIVE........................................... 1
>>@ DIGITAL FUEL QUANTITY ERROR CODES ..................... 2
FUEL FILTER BYPASS.......................................................................... 2
FUEL PUMP LOW PRESSURE............................................................. 3
FUEL QUANTITY INDICATOR INOPERATIVE .................................... 5
BCD IMBAL ................................................................................... 5
INADVERTENT TRANSFER OF FUEL INTO CENTER TANK ........... 6
INFLIGHT ENGINE FUEL LEAK ........................................................... 7
BCD LOW FUEL........................................................................... 8
>>@ MINIMUM FUEL OPERATION............................................. 8
REFUELING WITH BATTERY ONLY.................................................... 9
REFUELING WITH NO AC OR DC
POWER SOURCE AVAILABLE ...................................................... 9
TANK TO TANK FUEL TRANSFER
GROUND OPERATION ONLY...................................................... 10
FUEL
Sec. 2.12 TOC-2
Rev. 11/15/02 #41
Continental 737
Flight Manual
INTENTIONALLY LEFT BLANK
737
Flight Manual
Continental
FUEL
Sec. 2.12 Page 1
Rev. 11/15/02 #41
FUEL
BCD CONFIG
The fuel CONFIG annunciation indicates fuel quantity in the center tank exceeds
1600 lbs. and both center tank pumps are producing low or no pressure with
either engine running.
Center Tank Fuel Pump Switches..............................................................ON
* * * *
CROSSFEED SELECTOR INOPERATIVE
The valve failed in the CLOSE position is indicated by the crossfeed VALVE
OPEN light illuminated bright with the crossfeed selector in the OPEN
position.
The valve failed in the OPEN position is indicated by the crossfeed VALVE
OPEN light illuminated bright with the crossfeed selector in the CLOSE
position.
IF Valve CLOSED:
Flight conditions permitting, vary thrust to maintain fuel balance. If
unable to maintain acceptable balance, land as soon as possible.
* * * *
IF Valve OPEN:
Maintain fuel balance with selective use of fuel pumps.
* * * *
OR
FUEL
Sec. 2.12 Page 2
Rev. 11/15/02 #41
Continental
737
Flight Manual
>>@ DIGITAL FUEL QUANTITY ERROR CODES
Hard Error
A hard error is indicated by an ERR symbol and the absence of the analog
quantity arc around the circumference of the gauge. Instead of indicating a
quantity in lbs, it shows a fuel quantity of 0 lbs.
Any quantity indicator displaying a hard error indication is unusable. Refer to
the MEL and follow established procedures for operation with an inoperative
fuel gauge. Enter the error code and condition of flight in the logbook. Do not
attempt to clear the error codes without concurrence of Maintenance.
Soft Error
A soft error indication is characterized by the ERR symbol but the indicator will
continue to present the analog arc and the fuel quantity in lbs. This is because
whenever a soft error is displayed, the fuel quantity is still valid within an
accuracy of ± 3%. Enter a soft error message error code and the condition of
flight in the logbook for maintenance action.
* * * *
FUEL FILTER BYPASS
A fuel FILTER BYPASS light illuminated indicates impending fuel filter bypass due
to a contaminated filter.
Erratic engine operation and flame out may occur due to fuel contamination.
* * * *
737
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