De-activation of the Frangible Drain Mast [CFMI]

TASK 71-71-42-040-044-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-A	Removal of the Drain Mast Seal of the Fan Cowl Door
TASK 71-13-11-400-804-A	Installation of the Drain Mast Seal of the Fan Cowl Door
TASK 71-71-42-000-040-A	Removal of the Drain Mast

3. Job Set-up
Subtask 71-71-42-941-056-A ** ON A/C NOT FOR ALL

A. Not applicable.

4. Procedure
Subtask 71-71-42-020-058-A ** ON A/C NOT FOR ALL

A. Remove the remaining part of frangible drain mast (Ref. AMM TASK 71-71-42-000-040).

Subtask 71-71-42-210-054-A ** ON A/C NOT FOR ALL

B. Before each flight, without opening the fan cowl doors, 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 lower edge of the fan cowl doors.

Subtask 71-71-42-960-050-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] 2026.04.01 02:23:41 UTC