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E.  Engine Noise
(1)  Jet engines typically produce noise capable of causing temporary, as well as permanent, loss of hearing. Even short exposures to extreme noise may result in damage to the ears and all personnel must use some means of protection. Noise can affect the ear mechanism in such a way as to cause unsteadiness or inability to walk or stand without reeling. Therefore, the use of cup type ear protection is recommended. If engines are to be serviced from aero-stands or platforms these shall be equipped with protective railings to prevent falls.
F.  Engine Cool Down
(1)  After engine operation, care must be taken to ensure that the tailpipe has cooled before any work is performed in that area. All other parts usually may be worked on without danger of burn.
G.  Fuel and Lubricating Oils
(1)  All fuel and lubricating oils tend to dry the skin. Precautions should be taken to avoid contact with these fluids as much as possible.
3.  Engine Operation Preparations
A.  General
(1)  
This preparation procedure describes those actions required before the engine is motored or started. These preparations include general precautions such as clearing the engine operating area of personnel and foreign objects. These precautions must be observed before every engine operation to prevent injury to personnel or damage to equipment.

(2)  
If the engine had a fire and fire extinguishing agents were used, do the procedure “Power Plant Cleaning” (AMM 71-00/701).

5C9 
Aug 01/96  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  71-09-100 Page 203 

 

G42785G42943 G42938G42933 G42860G42861 G42789G42925
JT8D Turbofan Engine Hazard Areas  501 
71-09-100  Figure 201 (Sheet 1)  Jun 20/86 
Page 204 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

5C9  JT8D Turbofan Engine Hazard Areas 
Jun 20/86  Figure 201 (Sheet 2)  71-09-100 
Page 204A 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

JT8D Turbofan Engine Hazard Areas  5C9 
71-09-100  Figure 201 (Sheet 3)  Jun 20/86 
Page 204B 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

5C9  JT8D Turbofan Engine Hazard Areas 
Jun 20/86  Figure 201 (Sheet 4)  71-09-100 
Page 204C 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

JT8D Turbofan Engine Hazard Areas  5C9 
71-09-100  Figure 201 (Sheet 5)  Jun 20/86 
Page 204D 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

 

5C9  JT8D Turbofan Engine Hazard Areas 
Jun 20/86  Figure 201 (Sheet 6)  71-09-100 
Page 204E 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

Engine Entry/Exit Corridors & Personnel Safety Lanyard Installation  5C9 
71-09-100  Figure 201A (Sheet 1)  May 01/00 
Page 204F 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

5C9  Engine Entry/Exit Corridors & Personnel Safety Lanyard Installation 
May 01/00  Figure 201A (Sheet 2)  71-09-100 
Page 205 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

(3)  
If installed the engine gravel protection system shall be used for all engine ground operation conducted in areas where surfaced runup pads are not available. Failure to use the system in areas where rocks, gravel, dirt, and other debris could be drawn into the engine inlet, could result in extensive damage to the engine. This system may be used during any engine or airplane system checkout, including engine trim, without any degression of engine performance parameters.

(4)  
During cold weather, additional preparations may be necessary (Ref 71-09-111, Cold Weather Operating Procedures).

(5)  
Each engine starter used for starting and motoring is supplied with low-pressure air through a cross-feed manifold from an operating engine, a ground service cart low-pressure air source, or the airplane auxiliary power unit.

B.  Equipment and Materials
(1)  
Safety Lanyard, Personnel - F80239

(2)  
Guard-Inlet, Engine Run-up, C12001 (use is optional)

(3)  
Ground Service Electrical Power Unit (90 KVA output required)
　
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