De-activation of the Frangible Drain Mast [CFMB]

TASK 71-71-42-040-045-A
De-activation of the Frangible Drain Mast

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
CDL 71-01
Frangible Drain Mast
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS

B. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-11-000-804-C	Removal of the Drain Mast Seal of the Fan Cowl Door
TASK 71-13-11-400-804-C	Installation of the Drain Mast Seal of the Fan Cowl Door
TASK 71-71-42-000-041-A	Removal of the Drain Mast

3. Job Set-up
Subtask 71-71-42-010-062-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure
Subtask 71-71-42-020-059-A ** ON A/C NOT FOR ALL

A. Remove the remaining part of frangible drain mast (Ref. AMM TASK 71-71-42-000-041).

Subtask 71-71-42-210-055-A ** ON A/C NOT FOR ALL

B. Before each flight, without opening of the fan cowl doors:
(1) Do an inspection of the fan-cowl drain-mast seals for wear, damage, hole and tear deformation of the curved sections of the seal along the lower edge of the fan cowl doors.

Subtask 71-71-42-960-051-A ** ON A/C NOT FOR ALL

C. Replace worn or damaged parts (Ref. AMM TASK 71-13-11-000-804) and (Ref. AMM TASK 71-13-11-400-804).

[Rev.10 from 2021] 2026.04.02 06:32:29 UTC