Installation of the Forward Crossover Beam (Fan and T/R Cowls Removed) [IAE]

TASK 78-30-10-400-010-A
Installation of the Forward Crossover Beam (Fan and T/R Cowls Removed)

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 2M (6 FT)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in )

B. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
1	COTTER PIN	AIPC 54-57-17-02-260

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-20-400-040-A	Installation of the Power Plant
TASK 71-00-20-400-040-A-01	Installation of the Power Plant with the Engine Positioner TWW 75E (MIAG)
TASK 71-13-11-400-010-A	Installation of the Left Fan Cowl
TASK 71-13-16-400-010-B	Installation of the Right Fan Cowl (438AR, 448AR)
TASK 78-32-01-400-010-A	Installation of the Left Thrust Reverser Half - Eng No. 1
TASK 78-32-02-400-010-A	Installation of the Left Thrust Reverser Half - Eng No. 2
TASK 78-32-03-400-010-A	Installation of the Right Thrust Reverser Half - Eng No. 1
TASK 78-32-04-400-010-A	Installation of the Right Reverser Half - Eng. No. 2
Forward Crossover Beam

3. Job Set-up
Subtask 78-30-10-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position.

4. Procedure
Subtask 78-30-10-420-054-A ** ON A/C NOT FOR ALL

A. Install the forward crossover beam.

Forward Crossover Beam ** ON A/C NOT FOR ALL

(1) Install the spacer (5), the bolt (4), the washer (3) and the nut (2).
(2) TORQUE the nut (2) to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in )

.
(3) Install the AIPC 54-57-17-02-260 COTTER PIN (1).

Subtask 78-30-10-420-055-A ** ON A/C NOT FOR ALL

B. Install the engine (Ref. AMM TASK 71-00-20-400-040).

Subtask 78-30-10-420-056-A ** ON A/C NOT FOR ALL

C. Install the left and right thrust reverser halves (Ref. AMM TASK 78-32-01-400-010) , (Ref. AMM TASK 78-32-02-400-010), (Ref. AMM TASK 78-32-03-400-010) and (Ref. AMM TASK 78-32-04-400-010).

Subtask 78-30-10-420-057-B ** ON A/C NOT FOR ALL

D. Install the left and right fan cowl doors (Ref. AMM TASK 71-13-11-400-010) and (Ref. AMM TASK 71-13-16-400-010).

5. Close-up
Subtask 78-30-10-410-053-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 03:27:21 UTC