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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 4 (BLOCK 17)
ARE THERE SIGNS OF A LEAK?
YES
NO
22 DO THE CBP (AIR) TUBE CHECK (AMM 71-00-59/101,
FIG. 105).
WAS THE TEST WITHIN THE
LIMITS?
YES NO23 DO THE PS12 TUBE/MANIFOLD
CHECK (AMM 71-00-59/101,
FIG. 106).
WERE THE LEAKS OR DAMAGE
IN THE LIMITS?
YES NO24 DO THE BLEED BIAS SENSOR CHECK (AMM 75-33-00/601).
IS THE TEST RESULT IN THE LIMITS?
YES
SEE SHEET 6 (BLOCK 25)
Throttle Stagger or N1 is Not at Target in All Phases of Flight Not Known
Figure 117A (Sheet 5)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 5 (BLOCK 24)
YES
NO
25 DO THE VBV FEEDBACK CABLE
TRAVEL AND RESISTANCE CHECKS
(AMM 75-32-05/501).
ARE THE CHECKS CORRECT?
YES
NO
26 DO THE VBV FEEDBACK CABLE
STATIC RIG CHECK
(AMM 75-32-05/501).
IS THE RIG CHECK CORRECT?
YES
NO
27 DO THE CDP (AIR) TUBE
CHECK (AMM 71-00-59/101,
FIG. 104).
ARE THERE SIGNS OF A LEAK?
YES
NO
28 DO THE CBP (AIR) TUBE
CHECK (AMM 71-00-59/101,
FIG. 105).
WAS THE TEST WITHIN THE LIMITS?
YES
NO
29 DO THE PS12 TUBE/MANIFOLD
CHECK (AMM 71-00-59/101,
FIG. 106).
WERE THE LEAKS OR DAMAGE IN THE LIMITS?
YES
NO
30 DO THE BLEED BIAS SENSOR
CHECK (AMM 75-33-00/601).
IS THE TEST RESULT IN THELIMITS?
YES
SEE SHEET 7 (BLOCK 31)
Throttle Stagger or N1 is Not at Target in All Phases of Flight Not Known
Figure 117A (Sheet 6)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 6 (BLOCK 30)
Throttle Stagger or N1 is Not at Target in All Phases of Flight Not Known
Figure 117A (Sheet 7)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
PREREQUISITES
MAKE SURE THE AIRPLANE IS IN THIS CONFIGURATION: ELECTRICAL POWER IS ON (AMM 24-22-00/201)
NOTES ON THROTTLE STAGGER:
1.
THROTTLE STAGGER WITH "PMC ON" SHOULD NOT USUALLY BE MORE THAN ONE KNOB WITH STABILIZED EQUAL %N1.
2.
THROTTLE STAGGER WITH "PMC OFF" OR "INOPERATIVE" CAN BE MORE THAN ONE KNOB AS THE THRUST IS CONTROLLED TO %N2 (NOT %N1). BECAUSE OF ENGINE TO ENGINE SPEED (%N1) - SPEED (%N2) RELATIONSHIPS, DIFFERENT "PLA" SETTINGS CAN OCCUR FOR A GIVEN INDICATED %N1.
3.
IF THE AIRPLANE IS WITH ENGINE INTERMIX, THE STAGGER LIMITS IN NOTES "1." AND "2." ARE INCREASED BY ONE-HALF KNOB.
IF UNSATISFACTORY ENGINE IS NOT KNOWN, IT IS RECOMMENDED THAT YOU DO TROUBLESHOOTING ON THE TWO ENGINES.
Throttle Stagger or N1 is Not at Target at Climb or Cruise
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