RòT2xKHN2
N2 (rpm) = %N2x99.00 rpm
TT2`C+273.16
RòT2 = (KHN2 is found on sheet 2)
288.16
NOTE: At 1.25 EPR N2 is <9550 rpm and the HPC stator vanes are operating on the SVS29-5 schedule. The Limits Table for N2 shown in Figure 508 includes the SVS29-5 scheduling, therefore no SVS correction is necessary.
(d) Calculate the corrected EGT (`C):
EGT+273.16
EGTC (`C) =
-[273.16]
1.000
òT2
1.000
TT2`C+273.16
1.000
òT2 =
288.16
Data Correction Equations
Figure 507 (Sheet 1)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
HUMIDITY CORRECTION FACTORS
L-A0668 (0293)
Data Correction Equations Figure 507 (Sheet 2)
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ABBREVIATIONS: EEC = ELECTRONIC ENGINE CONTROL PP = PROGRAMMING PLUG P/N = PART NUMBER IDENT. = IDENTIFICATION
FOR EEC's PRE-SB 73-188 CONFIGURATION FOR EEC's CONFIGURATION SB 73-188, OR LATER
N1, N2 And EGT Acceptance Limits
Figure 508
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M03384
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
Not Used
Figure 509
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TEST NO. 9 - PERFORMANCE TEST
_____________________________
WARNING:_______ DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT
THE OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL
OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO
PERSONS OR DAMAGE TO EQUIPMENT.
(b)
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
(c)
Open the core cowl panels (AMM 71-11-06/201).
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN
_______ THE THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(d)
Open the thrust reversers (AMM 78-31-00/201). S 085-112-N00
(2)
Remove the test equipment from the engine and the control cabin. S 865-114-N00
(3)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 415-166-N00 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(4)
Close the thrust reversers (AMM 78-31-00/201). S 415-168-N00
(5)
Close the core cowl panel (AMM 71-11-06/201). S 415-167-N00
(6)
Close the fan cowl panels (AMM 71-11-04/201). S 445-169-N00
(7)
Do the activation procedure for the thrust reversers (AMM 78-31-00/201).
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