EFFECTIVITY AIRPLANES WITH DELCO INS
CONFIG ATG A Page 528 Aug 25/88
34-41-00
XA 11) Retain values displayed on VOR/DME 1 indicator and CDU and XA compare them. XA XA NOTE:____Value shown on VOR/DME indicator is in decimal XA basis. XA Value shown on CDU is in octal basis. XA To compare these values it is necessary to apply XA following formula: XA A10 = (DME distance x 75.96) + 307, where A is given XA in base 10. XA Transform A base 10 (A10) to A base 8 (A8). XA Compare A8 with value retained on CDU XA (Tolerance |10-8). XA XA Example: DME distance: 5 NM XA A10 = (5 x 75.96) + 307 = 687 XA A8 = 1257 XA CDU display must be 1257 |10 XA XA ~ê XA CDU XA DME indicatorèê. XA Left display Right display XA (+/- 10) XA è””. XA Flag 0000 0000 XA 0 NM (SELF 0000 0463 XA TEST) XA 3.1 NM 0000 1041 XA 4.3 NM 0000 1173 XA 5.1 NM 0000 1265 XA 100 NM 0001 7337 XA éé XA XA (g) Return INS 1 to normal by performing the following: XA 1) Press WY PT CHG key. Check WY PT CHG and INSERT keys XA light. XA 2) Press 1. FROM side of FROM-TO display shows 1. XA XA NOTE:____Do not press INSERT key. XA XA 3) Press CLEAR. WY PT CHG and INSERT keys go out. XA 4) FROM-TO and data displays return to normal. XA (h) Repeat steps (e) to (g) substituting INS 2 for INS 1, No. 2 INS XA CDU for No. 1 INS CDU, INS UPDATING 2 annunciators for INS XA UPDATING 1 annunciators and DME 2 circuit breaker for DME 1 XA circuit breaker. XA (i) If the INS is no longer required, restore airplane to normal.
F. Restore Airplane to Normal
EFFECTIVITY
AIRPLANES WITH DELCO INS
CONFIG ATG A Page 529 Aug 25/88
34-41-00
(1) Place each INS mode selector switch in OFF position.
CAUTION:_______ FAILURE TO MOVE MODE SELECTOR TO OFF WILL CAUSE INS TO AUTOMATICALLY SWITCH TO BATTERY POWER AND A WARNING HORN IN NOSE WHEEL WELL TO ACTUATE 30 (| 10) SECONDS AFTER POWER IS REMOVED FROM AIRPLANE.
(2) (3) Remove electrical power if no longer required. Refer to 24-22-00.Remove equipment cooling if no longer required. Refer to 21-58-00.
EFFECTIVITY AIRPLANES WITH DELCO INS
CONFIG 01 A Page 530 Aug 25/88
34-41-00
INERTIAL NAVIGATION SYSTEM - ADJUSTMENT/TEST
___________________________________________
1. Operational Test - Inertial Navigation System
_____________________________________________
A. General
(1) The INS operational test is similar to the preflight procedure used to prepare an INS for flight. This requires that exact aircraft present position and intended waypoint latitude and longitude be known. The procedure is identical for each individual INS undergoing test. This test requires no special tools.
B. Referenced Procedures
(1)
21-58-00, Equipment Cooling - Adjustment/Test (Operational Test)
(2)
24-22-00, Manual Control - Maintenance Practices (Apply Power)
C. Equipment and Materials
(1) Cards containing airplane present position and waypoint information.
D. Prepare for Test
(1)
Verify setting of Mode Selector Unit remote access switch.
(a)
Remove the two screws securing the access cover to the mode selector unit.
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本文鏈接地址：747飛機維護手冊AMM CHAPTER 34 - NAVIGATION 第34章導航3(32)
