Loss of the VOR 1 Data on the ND

TASK 34-55-00-810-812-A
Loss of the VOR 1 Data on the ND

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2044160
AMM 34-55-00-720-001	Functional Test of the VOR/MKR
AMM 34-55-00-740-002	BITE Test of the VOR/MKR
ASM 345501
AMM 34-55-11-000-001	Removal of the VOR Antenna
AMM 34-55-11-400-001	Installation of the VOR Antenna
AMM 34-55-31-000-001	Removal of the VOR/MKR Receiver
AMM 34-55-31-400-001	Installation of the VOR/MKR Receiver

3. Fault Confirmation
Subtask 34-55-00-720-050-A

A. Test
(1) Do the functional test of the VOR/MKR AMM 34-55-00-720-001.

4. Fault Isolation
Subtask 34-55-00-810-062-A

A. If the VOR 1 data do not come into view on the ND:

(1) If the test gives a maintenance message:

(2) If the test does not give a maintenance message:

(a) If the fault continues:

1 If the fault continues:

do a check and repair the wiring from the VOR 1/2 antenna (4RS) to the VOR/MKR receiver 1 (3RS1) ASM 345501 and ESPM 2044160.

Subtask 34-55-00-720-051-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:40:27 UTC