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TEST BAROMETRIC  ALTIMETER (Continued)
REMOVE  CRUISE  GUIDE  SIGNAL CONDITIONER

TM-55-1520-240-23-7 CH-47D Heilcopter Manual
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TM  55-1520-240-23-7 8-38 TEST  BAROMETRIC ALTIMETER (Continued) 8-38 14. Rotate  adjustment  knob  (3)  of  test  altimeter (6)  and  altimeter  being  tested  to  bring  both barometric  scales  to  29.92.   Record  altitude reading. 15. Adjust  test  set  to  altitude  test  points. Readings  shall  be  within  tolerance  listed  (TM 55-4920-231-14). INSPECT 16. Adjust test set (2)  to  cause  altimeter  to  return  to altitude  recorded  in  step  14. 17. Shut down  test set  (TM  55-4920-231-14). 18. Shut  down  power  supply. 19. Disconnect  altimeter  (1)  from  test  setup. ALTITUDE  TEST  POINT  (FEET) ALTIMETER  READING  (FEET) 0 -30  to  30 500 465  to  535 1,000 965  to  1,035 1,500 1,460  to  1,540 2,000 1,960  to  2,040 3,000 2,955  to  3,045 4,000 3,950  to  4,050 6,000 5,940  to  6,060 8,000 7,930  to  8,070 10,000 9,920  to  10,080 12,000 11,910  to  12,090 14,000 13,900  to  14,100 16,000 15,890  to  16,110 18,000 17,880  to  18,120 20,000 19,870  to  20,130 FOLLOW-ON  MAINTENANCE: None END  OF  TASK 8-124







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