Removal of the SEC

TASK 27-94-34-000-001-A
Removal of the SEC

ZONE: 121
ZONE: 127
ZONE: 128
FIN: 1CE1
FIN: 1CE2
FIN: 1CE3

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121	AVIONICS COMPARTMENT
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT
822
FOR [1CE1] (SEC-1)
FOR [1CE2] (SEC-2)
824
FOR [1CE3] (SEC-3)
811

C. Referenced Information

REFERENCE	DESIGNATION
TASK 31-32-00-860-006-A	Procedure to Get Access to the SYSTEM REPORT/TEST F/CTL Page
Spoiler Elevator Computer (SEC)

3. Job Set-up
Subtask 27-94-34-810-050-A

A. Trouble Shooting Data
(1) You can print the Trouble Shooting Data (TSD) as follows:

get access to the SYSTEM/REPORT/TEST (Ref. AMM TASK 31-32-00-860-006).
on this page, push the line key adjacent to the EFCS1 and/or EFCS2 indication.
on this page, push the line key adjacent to the LAST LEG REPORT indication.
on this page, push the line key adjacent to the failure(s) to get the TROUBLE SHOOTING DATA page.
print the TROUBLE SHOOTING DATA page.

Subtask 27-94-34-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824, 811 and 822.
(2) Open the access door:
(a) FOR [1CE1] (SEC-1), [1CE2] (SEC-2)
824
(b) FOR [1CE3] (SEC-3)
811
(c) For battery power center 105VU 822.
(3) On the battery power center 105VU:

Loosen the two screws and remove the protective cover

Subtask 27-94-34-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1CE1 (SEC1)
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B08
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B03
** ON A/C ALL
105VU	FLT CTL/SEC1/STBY SPLY	22CE	B01
FOR FIN: 1CE2 (SEC2)
121VU	FLIGHT CONTROLS/SEC2/SPLY	21CE2	Q18
FOR FIN: 1CE3 (SEC3)
121VU	FLIGHT CONTROLS/SEC3/SPLY	21CE3	Q19

4. Procedure
Subtask 27-94-34-020-050-A

A. Removal of the SEC
(1) Loosen the knurled nuts (4).
(2) Lower the nuts (4).
(3) Pull the SEC (1) on its rack (3) to disconnect the electrical connectors (2).
(4) Remove the SEC (1).
(5) Put CAP - BLANKING on the disconnected electrical connectors (2).

[Rev.10 from 2021] 2026.03.31 23:59:44 UTC