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AREA CHART  NO. OF INCIDENTS 5  INSPECTION REQUIREMENTS 
B  1-7 8 6 6  (1) (1) (2) (3) (4) (2) (3)  601, Engine Gaspath Inspection). (FIM 71-00-00/101, Fig. 103). Make a record of these items: (1) Engine Serial No., (2) Max Temperature, (3) Time the B. vanes. A. 60 hours of operation (AMM 72-00-00/601, signs of distress on the turbine blades or tion, and metal particles. Examine for sure turbine for burned residue, distor-and the area to the rear of the low pres-Examine the exhaust sleeve, exhaust plug, If the inspection is not satisfactory, do Do the hot section inspection in less than the borescope inspection (AMM 72-00-00/ Engine Overtemperature Inspection/Check). the procedure on Engine Parameters Abnormal Correct the cause of the overtemperature with Remove the engine (AMM 71-00-02/401). Make a record of these items: (1) Engine Serial No., (2) Max Temperature, (3) Time the Do the visual inspection as follows: EGT was over the limit (Takeoff or Max Con-tinuous) (4) Steady-state or Surge Conditions the shop (see the PW4000 Engine Manual). Correct the cause of the overtemperature in EGT was over the limit (Takeoff or Max Con-tinuous) (4) Steady-state or Surge Conditions 7 
C  1  (1) (2) (3)  Remove the engine (AMM 71-00-02/401). Make a record of these items: (1) Engine the shop (see the PW4000 Engine Manual). Serial No., (2) Max Temperature, (3) Time the Correct the cause of the overtemperature in tinuous) (4) Steady-state or Surge Conditions EGT was over the limit (Takeoff or Max Con-7 
D  No Limit  (1) (2)  (FIM 71-00-00/101, Fig. 103). Make a record of these items: (1) Engine Serial No., (2) Max Temperature, (3) Time the EGT was over the limit (Takeoff or Max Con-tinuous) (4) Steady-state or Surge Conditions the procedure on Engine Parameters Abnormal Correct the cause of the overtemperature with 

Engine Overtemperature Inspection Requirements
(Engine Operation at or Above Idle Speed)
Figure 206 (Sheet 3)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
`C
760

EXHAUST GAS TEMPERATURE (T14.95)(MAXIMUM TEMPERATURE)
750 746
740 730 720 710 700 690 680 670 660 650 640
10 152025 3035 404550 5560
TIME OF OVERTEMPERATURE - SECONDS
L-B4820 (1297)
Engine Overtemperature Inspection Requirements (Engine Operation at or Above Idle Speed) Figure 206 (Sheet 4)
H03837
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S 862-038-N00
 (2)  
The borescope inspection (AMM 72-00-00/601) of the 1st- and 2nd-stage turbine blades shows they have no damage (cracks, blisters in the coating, elongation, etc.) and visual inspection of the tailpipe shows no signs of turbine failure.

 F.  
Fuel System Limits and Specifications

 S 862-039-N00
 (1)  The fuel system limits are as follows:
 (a)  The fuel flow indications at sea level:
 1) Idle - 544-725 kgs/hr
 2) Takeoff - 7257-9979 kgs/hr

 NOTE: You must examine and do the necessary maintenance
____ for the fuel flow indications which are more than the ranges above.
 (b)  The warning lights for low pressure on the fuel panel are off when the output pressures for the fuel boost pump are 4-7 psi (28-48 kPa).
 NOTE: You must operate the fuel boost pump before you start
____ the engines and after the engine shutdown.
 S 862-040-N00
 (2)  
Fuel System Specifications

 (a)  You must only use the fuel which is in the specifications of Pratt & Whitney Service Bulletin 2016.

 G.  
Oil System Limits and Specifications

 S 862-041-N00
 (1)  Oil system limits:
　
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