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01 NU. XA è””””. XA XA 04 Heading error ALIGN Possible transient mal- XA 41 04 Inserted/computed STBY,ALIGN function. Select STBY, XA latitude comparison reinsert present position, XA select ALIGN. Replace NU XA if warning persists. XA (Attitude mode of opera- XA tion will not be affected XA by malfunction). XA è””””. XA 42 02 Drift angle 45. or NAV Observe navigation data on XA greater CDU data displays. If data XA is unreasonable, replace XA NU. (Attitude mode of XA operation will not be XA affected by malfunction). XA éééé XA INS Status/Malfunction Code Display XA Figure 101 (Sheet 4) XA
EFFECTIVITY
AIRPLANES WITH DELCO INS CONFIG 1 02 A Page 111 Dec 25/8734-41-00
XA ~êêêê XA Malf. Action Modes of Recommended XA Code Code Failed Test Operation Maintenance Action XA è””””. XA XA 43 04 Intersystem ALIGN Possible transient mal- XA comparison function. Select STBY, XA reinsert present position, XA select ALIGN. Replace NU XA if warning persists. XA (Attitude mode of opera- XA tion will not be affected XA by malfunction). XA è””””. XA XA 44 02 Z gyro drift rate ALIGN Select STBY, reinsert XA present position, select XA ALIGN. Replace NU if XA warning persists. XA (Attitude mode of opera- XA tion will not be affected XA by malfunction). XA è””””. XA XA 45 Gyro scale factor or ALIGN
04 Possible transient mal- XA or loaded latitude. function. Reinsert XA present position, select XA NAV if READY NAV lamp XA lights. If actual PI num- XA ber does not decrease to XA desired PI, replace NU. XA (Attitude mode of opera- XA tion will not be affected XA by malfunction). XA è””””. XA 46 01 Fore/aft external ALIGN XA program pins XA Turn systems off. Check XA aircraft wiring to NU. XA (left top plug, pins 2, XA 3, 9, 10, 12).
48 01 TK/TKE+DA ALIGN XA external program XA pins XA éééé XA INS Status/Malfunction Code Display XA Figure 101 (Sheet 5) XA
EFFECTIVITY
AIRPLANES WITH DELCO INS CONFIG 1 02 A Page 112 Dec 25/8734-41-00
XA ~êêêê XA Malf. Action Modes of Recommended XA Code Code Failed Test Operation Maintenance Action XA è””””. XA 49 02 Fix taking delta NAV Observe navigation data on XA too large CDU data displays. If XA data is unreasonable, re- XA place NU. (Attitude mode XA of operation will not be XA affected by malfunction). XA è””””. XA 50*[1] Blank Vertical velocity ALIGN None - output not used XA è””””. XA 53 01 After landing po-NAV Select STBY, reinsert XA sition update too present position. Replace XA large NU if warning persists. XA (Attitude mode of opera- XA tion will not be affected XA by malfunction). XA è””””. XA 57 XY Platform rotation ALIGN
02 Check HDG display on CDU. XA rate in ALIGN If HDG is reasonable, XA select STBY, insert XA present position, select XA ALIGN. If HDG is un- XA reasonable replace NU. XA (Attitude mode of opera- XA tion may not be affected XA by malfunction). XA è””””. XA 59 02 600 ms loop STBY,ALIGN,NAV Select STBY, reinsert XA present position. Replace XA NU if warning persists. XA (Attitude mode of opera- XA tion will not be affected XA by malfunction). XA è””””. XA 60 04 X or Y sample and ALIGN Possible transient mal- XA hold change function. Down mode to XA STBY, reinsert present XA position, select ALIGN. XA Replace NU if warning XA persists. XA éééé XA *[1] Failed test does not illuminate WARN lamp on control/display unit.
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