Removal of the Air Data Module

TASK 34-11-17-000-001-A
Removal of the Air Data Module

ZONE: 110
ZONE: 120
FIN: 19FP1
FIN: 19FP2
FIN: 19FP3
FIN: 19FP4
FIN: 19FP5
FIN: 19FP6
FIN: 19FP7
FIN: 19FP8

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	CAP - BLANKING
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
110	RADOME (NOSE CONE TO FR 1)
120	AVIONICS COMPARTMENT
822, 824
FOR [19FP1] (ADM-L TOTAL PRESSURE)
FOR [19FP3] (ADM-STBY TOTAL PRESSURE)
812
FOR [19FP2] (ADM-R TOTAL PRESSURE)
822
FOR [19FP4] (ADM-R STATIC PRESSURE)
FOR [19FP5] (ADM-L STATIC PRESSURE)
FOR [19FP6] (ADM-R STATIC PRESSURE)
FOR [19FP7] (ADM-L STATIC PRESSURE)
824
FOR [19FP8] (ADM-STBY STATIC PRESSURE)
811

C. Referenced Information

REFERENCE	DESIGNATION
Air Data Module ** ON A/C NOT FOR ALL
Air Data Module ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 34-11-17-010-050-A

A. Get Access
(1) Put the ACCESS PLATFORM 1M(3 FT) in position :
(a) In zone 123 for left total pressure ADM 19FP1 and standby total pressure ADM 19FP3.
(b) In zone 122 for right total pressure ADM 19FP2.
(c) In zone 128 for right static pressure ADMs 19FP4 and 19FP6 and left static pressure ADMs 19FP5 and 19FP7.
(d) In zone 110 for standby static pressure ADM 19FP8.
(e) At access door 822.
(2) Open the applicable access door:
(a) FOR [19FP1] (ADM-L TOTAL PRESSURE), [19FP3] (ADM-STBY TOTAL PRESSURE)
812
(b) FOR [19FP2] (ADM-R TOTAL PRESSURE)
822
(c) FOR [19FP4] (ADM-R STATIC PRESSURE), [19FP5] (ADM-L STATIC PRESSURE), [19FP6] (ADM-R STATIC PRESSURE), [19FP7] (ADM-L STATIC PRESSURE)
824
(d) FOR [19FP8] (ADM-STBY STATIC PRESSURE)
811
(3) Open access door 822.
(4) On battery power center 105VU:

Loosen the two screws and remove the protective cover.

Subtask 34-11-17-865-050-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 19FP5 (ADML STATIC PRESSURE) FOR FIN: 19FP4 (ADMR STATIC PRESSURE) FOR FIN: 19FP1 (ADML TOTAL PRESSURE)
49VU	NAV PROBES/ADIRU1/115VAC	4FP1	F06
105VU	ADIRS/ADIRU1/28VDC	6FP1	C02
FOR FIN: 19FP7 (ADML STATIC PRESSURE) FOR FIN: 19FP6 (ADMR STATIC PRESSURE) FOR FIN: 19FP2 (ADMR TOTAL PRESSURE)
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
121VU	ADIRS/ADIRU/2/28VDC	6FP2	N04
FOR FIN: 19FP8 (ADMSTBY STATIC PRESSURE) FOR FIN: 19FP3 (ADMSTBY TOTAL PRESSURE)
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05
121VU	ADIRS/ADIRU/3/28VDC	6FP3	N03

4. Procedure
Subtask 34-11-17-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the Air Data Module (ADM)

NOTE: ADM 19FP8 has no foam insulation.

(1) For the removal of ADM 19FP4 or 19FP6:

Put the WARNING NOTICE(S) in position to tell persons not to open access door 824.
Close access door 824.

Subtask 34-11-17-020-050-D ** ON A/C NOT FOR ALL

A. Removal of the Air Data Module (ADM)

NOTE: ADM 19FP8 has no foam insulation and spacer.

(1) For the removal of ADM 19FP4 or 19FP6:

Put the WARNING NOTICE(S) in position to tell persons not to open access door 824.
Close access door 824.

(2) Disconnect the electrical connector (9).
(3) Disconnect the quick-disconnect coupling (8).
(4) Put the CAP - BLANKING on the disconnected electrical connectors (6) and (9).
(5) Put the PLUG - BLANKING on the disconnected quick-disconnect couplings (7) and (8).
(6) Hold the ADM (3) and remove the four screws (5) and the washers (4).
(7) Remove the ADM (3).
(8) Remove the foam insulation (2) and its four spacers (10).
(9) Do a general visual inspection of the spacers (10):
(a) Make sure that there are no signs of damage or cracks on the spacers (10).
(b) If you find damage, discard the spacers (10).
(10) Do a check of the dimensions of the spacers (10):
(a) Make sure that:
1 The inside diameter of the spacers is 5.00 mm (0.197 in.) plus or minus 0.20 mm (0.008 in.).
2 The length of the spacers is 7.93 mm (0.312 in.) plus or minus 0.20 mm (0.008 in.).

NOTE: The outside diameter of the spacers is not important for the installation of the ADM.

3 If the spacers do not have these dimensions, discard the spacers (10).

[Rev.10 from 2021] 2026.04.02 06:23:03 UTC