Loss of the Interface between the Weather Radar Transceiver 1 and the ADR3

TASK 34-13-00-810-999-A
Loss of the Interface between the Weather Radar Transceiver 1 and the ADR3

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-41-00-740-002	BITE Test of the Weather Radar
ASM 344102
AMM 34-41-33-000-004	Removal of the Weather Radar Transceiver
AMM 34-41-33-400-003	Installation of the Weather Radar Transceiver

3. Fault Confirmation
Subtask 34-13-00-740-355-A ** ON A/C NOT FOR ALL

A. Test

NOTE: Do the test that follows with the AIR DATA selector switch (15FP), on the SWITCHING panel 8VU, at CAPT/ON 3.

Do the BITE test of the weather radar AMM 34-41-00-740-002.

4. Fault Isolation
Subtask 34-13-00-810-251-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message ADIRU3(1FP3) BUS ADR/WXR1(1SQ1):

(1) If the fault stops:

(2) If the fault continues:

(a) If the fault continues:

remove the weather radar transceiver 1
remove the ADIRU3
do a check and repair the wiring between the ADIRU3 and the weather radar transceiver 1 : from pins AA/9A, 9B of the ADIRU3 to pins AB/9J, 10J of the weather radar transceiver 1 ASM 344102
install the weather radar transceiver 1
install the ADIRU3.

Subtask 34-13-00-810-251-C ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message ADIRU3(1FP3) ADR BUS/WXR1(1SQ1):

(1) If the fault stops:

(2) If the fault continues:

(a) If the fault continues:

remove the weather radar transceiver 1
remove the ADIRU3
do a check and repair the wiring between the ADIRU3 and the weather radar transceiver 1 : from pins AA/9A, 9B of the ADIRU3 to pins AB/9J, 10J of the weather radar transceiver 1 ASM 344102
install the weather radar transceiver 1
install the ADIRU3.

Subtask 34-13-00-740-356-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:33 UTC