HEATER switch -OFF.
If heater is off or fumes persist:

PRESS OUTBD switch -OFF.
MODE switch -OFF.

FUEL BOOST PUMP CONTROL switches -As required.
9.39 LITTER SYSTEM MALFUNCTIONS.
9.39.1 LITTER LIFT RUNAWAY.

From any one of the four cabin medical control panels:
1. EMERGENCY STOP switch -STOP. If litter continues to runaway: Cockpit AUX SW panel MED INT switch -

OFF.
After stopping the runaway:

3.
Pull the appropriate bad litter lift system con-trol FWD and AFT LIFT MOT circuit breaker on the medical interior circuit breaker panel.

4.
Do not use bad litter lift system.

9.40 OBOGS SYSTEM MALFUNCTIONS.

9.40.1 OBOGS BIT/FAULT LIGHT ILLUMINATED.
If after initial start up of OBOGS the automatic BIT/ FAULT cycle light on the monitor panel has not extin-guished after .ve minutes:
1.
Cockpit  AUX SW panel OBOGS switch -OFF.

2.
Utilize only the remaining O2 from the backup oxygen supply.

3.
Do not use OBOGS system.

9.41 FLIR SYSTEM MALFUNCTIONS.

9.41.1 MODE PROBLEM, CAGE PROBLEM, GIM-BAL RACHETING, IMAGE DISTORTION, MISC.
1.
FLIR control panel  POWER switch -OFF. Wait three minutes then, ON.

2.
Perform BIT/FIT check. Allow 3 to 4 minutes for FLIR to complete BIT/FIT check.

If FLIR problem is not solved:

3.
Press  STOW FLIR control panel POWER button.

4.
FLIR control panel POWER switch -OFF.

9.40.2 FAULT INDICATOR (BIT/FIT Error Reporting and Clear).
1.
Enable the menus and hook on FIT.

2.
Annotate the error code, hook on CLEAR label to clear the error report.

3.
Hook on FIT to initiate FIT.

4.
Hook on EXIT to end FIT.

If FLIR error code cleared and FLIR functions check out:

9-25 TM 1-1520-253-10

5. Continue mission and annotate FLIR error code  7. FLIR control panel POWER switch -OFF. 
at mission completion. 
8. Do not use FLIR system. 
If FLIR error code did not clear or FLIR functions do 
not check out:  9. Continue mission and annotate FLIR problem 
at mission completion. 
6. Press STOW FLIR control panel POWER 
button. 

9-26 Change 2 A-1/(A-2 Blank)

APPENDIX A 
REFERENCES 
AR 70-50  Designating and Naming Military Aircraft, Rockets and Guided Missiles 
AR 95-1  Army Aviation General Provisions and Flight Regulations 
AR 95-3  General Provisioning, Training, Standardization, and Resource Management 
AR 385-40  Accident Reporting and Records 
DA PAM 40-501  Noise and Conservation of Hearing 
DA PAM 738-751  Functional Users Manual for the Army Maintenance Management System Aviation 
(TAMMS-A) 
DOD FLIP  Flight Information Publication 
FAR Part 91  Federal Air Regulation, General Operating and Flight Rules 
FM 1-202  Environmental Flight 
FM 1-203  Fundamentals of Flight 
FM 1-230  Meteorology for Army Aviators 
FM 1-240  Instrument Flying and Navigation for Army Aviators 
FM 10-68-1  Aircraft Refueling 
FM 55-450-1  Army Helicopter External Load Operations 
FM 55-450-2  Army Helicopter Internal Load Operations 
TB 55-9150-200-24  Engine and Transmission Oils, Fuels, and Additives for Army Aircraft 
TC 1-204  Night Flight Techniques and Procedures 
TM 1-1520-253-CL  Operator’s and Crewmember’s Checklist, Army Model UH-60Q Helicopter 
TM 1-1520-250-23  General Tie-down and Mooring Technical Manual Aviation Unit and Intermediate 
　
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