Detailed Inspection of Fuselage External Surface around Water Drain Panel Cutout and Radius Inside Water Drain Box, between FR 28 and FR 29...

TASK 53-21-00-220-806-A
Detailed Inspection of Fuselage External Surface around Water Drain Panel Cutout and Radius Inside Water Drain Box, between FR 28 and FR 29...

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

ZONE: 100
ZONE: 130

1. Reason for the Job
Refer to the MPD TASK: 532190-02
DETAILED INSPECTION OF FUSELAGE EXTERNAL SURFACE AROUND WATER DRAIN PANEL CUTOUT AND RADIUS INSIDE WATER DRAIN BOX, BETWEEN FR 28 AND FR 29 AT STRINGER 43 LH.

NOTE: The effectivity of this task is "ALL". To know if this task is applicable to your aircraft, refer to the MPD task applicability.
The information on weight variant groups is given in the MPD and SRM introductions.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
100	LOWER HALF FUSELAGE INCLUDING RADOME
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
133AL

D. Referenced Information

REFERENCE	DESIGNATION
SRM 511100
SRM 512200
SRM 512300
Fuselage External Surface around the Water-Drain Panel Cutout and the Radius in the Water Drain Box, between FR28 and FR29 at STGR43, on the Left Side

3. Job Set-up
Subtask 53-21-00-941-100-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 130.
(2) Open potable water service-door 133AL.

Subtask 53-21-00-110-130-A ** ON A/C NOT FOR ALL

B. Preparation of the Inspection Area
(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(2) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .

4. Procedure
Subtask 53-21-00-220-095-A ** ON A/C NOT FOR ALL

A. Inspection
(1) Do a detailed inspection of the area between FR28 and FR29 at STGR43, on the left side. Do a check for damage or discontinuities of:

The fuselage external surface around the water-drain panel cutout
The radius in the water drain box.

(2) Make sure that there is no:
(a) Corrosion damage:
If you find corrosion, refer to the Structural Repair Manual ( SRM 512200) for the corrosion types, inspection, removal and subsequent corrosion protection.
(b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual ( SRM 511100) for the damage types, classification and corrective action.
(c) Paint layer damage:
If you find this type of damage, refer to the Structural Repair Manual ( SRM 512300) for general data for paint layers.

5. Close-up
Subtask 53-21-00-942-105-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) Close potable water service-door 133AL.
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:28:58 UTC