Installation of the Wall-Mounted Cabin-Attendant Seats

TASK 25-22-41-400-001-A
Installation of the Wall-Mounted Cabin-Attendant Seats

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THIS EQUIPMENT. THIS EQUIPMENT IS HEAVY (MORE THAN 12 KG (26.5 lb)) AND CAN CAUSE INJURY AND/OR DAMAGE.

ZONE: 200
ZONE: 260

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

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 140 and 100 lbf.in (1.58 and 1.13 m.daN )
No specific	Torque wrench: range to between 158 and 122 lbf.in (1.79 and 1.38 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.05PAC1)	Double Sided Adhesive Tape-- Foam Base -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE
260	AFT CABIN UTILITY AREA

D. Referenced Information

REFERENCE	DESIGNATION
TASK 11-00-00-400-007-A	Installation of the ESSO (Scotchcal Labels)
TASK 23-73-00-740-005-A	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
TASK 23-73-00-740-005-B	Interface and Power-Up Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 26-10-00-740-801-A	BITE Test of the Smoke Detection Function - System Test
Single Cabin Attendant-Seat ** ON A/C NOT FOR ALL
Single Cabin Attendant-Seat ** ON A/C NOT FOR ALL
Double Cabin Attendant-Seat ** ON A/C NOT FOR ALL
Double Cabin Attendant-Seat ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 25-22-41-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the stowage compartment of the seat is empty.
(3) If you install a cabin-attendant seat which does not have a handset installed, continue from step 4. A.

Subtask 25-22-41-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU B/ESS	153RH	G03
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M08
** ON A/C NOT FOR ALL
121VU	COM / CIDS / DEU B / NORM FWD	193RH	M09
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M09
** ON A/C ALL
2000VU	LIGHT-ATTND-WORK	1LZ	J03
** ON A/C NOT FOR ALL
2001VU	CIDS-DEU B-NORM-AFT	194RH	C08

4. Procedure
Subtask 25-22-41-560-050-A

A. Preparation for Installation
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that all of the placards of the retained/new components are in the correct position and in good condition.
(4) If necessary, install new placards (Ref. AMM TASK 11-00-00-400-007) and (Ref. AMM D/O 11-32-25-00).

Subtask 25-22-41-420-050-A ** ON A/C NOT FOR ALL

B. Installation of the Single Cabin Attendant-Seat

Single Cabin Attendant-Seat ** ON A/C NOT FOR ALL

(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Attach the washers (1) to the lavatory wall with Double Sided Adhesive Tape-- Foam Base - (Material No.05PAC1) .
(3) Hold the single cabin attendant-seat (2) in position and install it as follows:
(a) Make sure that the seatpan (8) is in the open position.
(b) Install the washers (4) and the bolts (5).
(c) TORQUE the bolts (5) to between 140 and 100 lbf.in (1.58 and 1.13 m.daN )

.
(d) Install the seat upholstery (6).
(4) Connect the electrical connector (3) as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Connect the electrical connector (3).
(5) Close the access to the single cabin attendant-seat (2):
(a) Install the removed equipment in the stowage compartment of the single cabin attendant-seat (2).
(b) Make sure that the work area is clean and clear of tools and other items.
(c) Remove the weight from the seatpan (8) and put it in the close position.
(d) Close the access flap (7).

Subtask 25-22-41-420-050-B ** ON A/C NOT FOR ALL

B. Installation of the Single Cabin Attendant-Seat

Single Cabin Attendant-Seat ** ON A/C NOT FOR ALL

(1) Install the single cabin attendant-seat:
(a) Apply Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the first three threads of the bolts (5).
(b) Install the bolts (5) five to six threads deep into the inserts of the monument wall, if removed before.
(c) Make sure that the distance between the heads of the bolts (5) and the monument wall is a minimum of 9.0 mm (0.36 in.).
(d) Engage the key fittings of the single cabin attendant-seat (2) to the bolts (5) and put the single cabin attendant-seat (2) in position.
(e) Make sure that the seatpan (8) is in open position.
(f) Tighten the bolts (5).
(g) Open the access flap (1) and install the bolts (7).
(h) TORQUE all the bolts (7) to between 140 and 100 lbf.in (1.58 and 1.13 m.daN )

.
(i) Install the seat upholstery (6) if removed before.
(2) Connect the electrical connector:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Connect the electrical connector (4) and install the cover (3).
(3) Close Access
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Remove the weight from the seatpan (8) and put it in the close position.
(c) Install the removed equipment in the stowage and close the access flap (1).

Subtask 25-22-41-420-051-E ** ON A/C NOT FOR ALL

C. Installation of the Double Cabin Attendant-Seat

Double Cabin Attendant-Seat ** ON A/C NOT FOR ALL

(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) If you removed the screws (10), install them:
(a) Install the screws (10) into the inserts of the wall.
(b) Make sure that the distance between the heads of the screws (10) and the wall is a minimum of 1.0 +0.5 -0 mm (0.04 +0.02 -0.00 in.).
(3) If you removed the screws (7), install them:
(a) Install the screws (7) into the inserts of the wall.
(b) Make sure that the distance between the heads of the screws (7) and the wall is a minimum of 1.0 +0.5 -0 mm (0.04 +0.02 -0.00 in.).
(4) If you removed the washers (2), attach them to the wall with Double Sided Adhesive Tape-- Foam Base - (Material No.05PAC1) .
(5) Install the double cabin attendant-seat (3):
(a) Put the double cabin attendant-seat (3) in position.
(b) Engage the key plates of the double cabin attendant-seat (3) into the screws (10).
(c) Push the double cabin attendant-seat (3) down.
(d) Open the access flap (4).
(e) If you removed the washers (5), install them.
(f) Install the screws (6).
(g) TORQUE the screws (6) and (10) to between 158 and 122 lbf.in (1.79 and 1.38 m.daN )

.
(h) Connect the electrical connector (11):
1 Remove the CAP-BLANKING from each electrical connector and receptacle.
2 Make sure that all the electrical connections are clean and in the correct condition.
3 Connect the electrical connector (11) to the receptacle (12).
(i) Close the access to the double cabin attendant-seat (3):
1 Install the seat upholsteries (9).
2 Install all removed equipment in the stowage compartment of the double cabin attendant-seat (3).
3 Close the access flap (4).
(6) Put the headrests (1) in position on the screws (7).
(7) Push the headrests (1) down to engage the key plates into the screws (7).
(8) Make sure that the work area is clean and clear of tools and other items.

Subtask 25-22-41-420-051-F ** ON A/C NOT FOR ALL

C. Installation of the Double Cabin Attendant-Seat

Double Cabin Attendant-Seat ** ON A/C NOT FOR ALL

(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Install the screws (6) if removed:
(a) Install the screws (6) five to six threads deep into the inserts of the lavatory wall.
(b) Make sure that the distance between the heads of the screws (6) and the lavatory wall is a minimum of 9.0 mm (0.36 in.).
(3) Install the screws (4) if removed:
(a) Install the screws (4) into the inserts of the lavatory wall.
(b) Make sure that the distance between the heads of the screws (4) and the lavatory wall is a minimum of 1.0 +0.5 -0 mm (0.04 +0.02 -0.00 in.).
(4) Install the double cabin attendant-seat (2):
(a) Put the double cabin attendant-seat (2) in position, engage the key plates with the screws (6) and push the double cabin attendant-seat (2) down.
(b) Open the access flap (1).
(c) Install the screws (5).
(d) TORQUE the screws (5) and (6) to between 140 and 100 lbf.in (1.58 and 1.13 m.daN )

.
(e) Close Access
1 Install the seat upholstery (7).
2 Install the removed equipment in the stowage compartment and close the access flap (1).
(5) Put the headrests (3) in position, engage the key plates with the screws (4) and push the headrests (3) down.
(6) Make sure that the work area is clean and clear of tools and other items.

Subtask 25-22-41-865-052-A

D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU B/ESS	153RH	G03
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M08
** ON A/C NOT FOR ALL
121VU	COM / CIDS / DEU B / NORM FWD	193RH	M09
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M09
** ON A/C ALL
2000VU	LIGHT-ATTND-WORK	1LZ	J03
** ON A/C NOT FOR ALL
2001VU	CIDS-DEU B-NORM-AFT	194RH	C08

Subtask 25-22-41-710-050-A

E. Do this operational handset test for the applicable cabin-attendant seat.

NOTE: Only do this test if a handset is installed.

ACTION	RESULT
1.In the cabin at the related attendant station:	In the cabin at the given attendant station:
Lift the handset from the handset cradle and speak.	The volume and clarity of the voice is correct.

Subtask 25-22-41-710-054-A

F. Operational Test
(1) Do this test of the cabin attendant work-lights:

ACTION	RESULT
1.On panels 2062VU or 2063VU:	On the related work light:
Push the related button to on.	The work light beam will fall onto the related cabin attendant seat.
On the related work light:
Adjust the beam with the optical adjusting tool to the middle edge of the related cabin attendant seat.	The work light beam will fall onto the middle edge of the cabin attendant seat.
On panels 2062VU or 2063VU:
Push the related button to off.	The work light goes off.

Subtask 25-22-41-740-050-A

G. Interface and Power-up Test of the Cabin Intercommunication Data System (CIDS)
(1) Do the interface and power-up test of the CIDS (Ref. AMM TASK 23-73-00-740-005).

Subtask 25-22-41-740-051-A

H. BITE Test of the Smoke Detection Function (SDF)
(1) Do the BITE test of the SDF (Ref. AMM TASK 26-10-00-740-801).

5. Close-up
Subtask 25-22-41-410-050-A

A. Make sure that the work area is clean and clear of tools and other items.

Subtask 25-22-41-862-050-A

B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:30:45 UTC