Apply Type I Grade 2 or 3 Temporary Protection to fuselage internal structure below cabin floor panels, including cabin floor structure between FR36 and FR46

TASK 53-31-00-916-002-A
Apply Type I Grade 2 or 3 Temporary Protection to fuselage internal structure below cabin floor panels, including cabin floor structure between FR36 and FR46

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

REFERENCE	QTY	DESIGNATION
No specific	1	SCRAPER - NON METALLIC

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ABB1)	Corrosion Preventive Compound-Water Displacing Hard Film -
(Material No.12ABC1)	Corrosion Preventive Compound-Water Displacing Soft Film -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
241EF, 241FF, 241GF, 241HF, 241JF, 241KF, 241LF, 241MF, 242FF, 242GF, 242HF, 242KF, 242LF, 242MF

D. Referenced Information

REFERENCE	DESIGNATION
TASK 21-20-00-010-001-A	Removal of the Air-Conditioning Distribution Ducts
TASK 21-20-00-410-001-A	Installation of the Air-Conditioning Distribution Ducts
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 25-23-44-000-001-A	Removal of the Lower Sidewall Panels (Dado Panels)
TASK 25-23-44-400-001-A	Installation of the Lower Sidewall Panels (Dado Panels)
TASK 53-00-00-000-801-A	Removal of the Floor Panels in the Cabin from FR12 to FR70
TASK 53-00-00-000-801-A-01	Removal of the Floor Panels in the Cabin from FR12 to FR70 (Alternative Removal Procedure - Dry Sealing Concept)
TASK 53-00-00-400-801-A	Installation of the Floor Panels in the Cabin from FR12 to FR70
TASK 53-00-00-400-801-A-01	Installation of the Floor Panels in the Cabin from FR12 to FR70 (Alternative Installation Procedure - Dry Sealing Concept)
Fuselage Internal Structure Below Cabin Floor Panels, Including Cabin Floor Structure between FR36 and FR46.

3. Job Set-up
Subtask 53-31-00-861-051-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 53-31-00-010-078-A

B. Get Access
(1) Remove the necessary equipment and furnishing to get access to the cabin floor panels.
(2) Remove floor panels 241HF 241GF 241FF 241EF 242FF 242GF 242HF 241MF 241LF 241KF 241JF 242KF 242LF and 242MF (Ref. AMM TASK 53-00-00-000-801).
(3) Remove the necessary lower sidewall panels between FR36 and FR46 (Ref. AMM TASK 25-23-44-000-001).
(4) Remove the necessary cabin air supply ducts installed above the floor structure between FR36 and FR46 (Ref. AMM TASK 21-20-00-010-001).
(5) Release and carefully pull back the necessary insulation blankets from the sides of the fuselage, below the floor level, between FR36 and FR46.
(6) Attach them temporarily to the fuselage structure above the floor level.

Subtask 53-31-00-110-071-A

C. Cleaning Procedure

WARNING: MAKE SURE THAT THERE IS A GOOD FLOW OF AIR THROUGH THE WORK AREA WHEN YOU USE SPECIAL MATERIALS. IF YOU GET ONE OF THESE MATERIALS ON YOUR SKIN, IN YOUR MOUTH OR IN YOUR EYES:

FLUSH IT AWAY WITH A FLOW OF CLEAN WATER FOR BETWEEN 10 AND 15 MINUTES.
GET IMMEDIATE MEDICAL AID IF IRRITATION OCCURS.

DO NOT BREATHE THE FUMES FROM THE MATERIAL. DO NOT SMOKE WHEN YOU USE THE MATERIAL. DO NOT USE THE MATERIAL NEAR A FLAME, SPARKS OR SOURCES OF HEAT. THESE MATERIALS ARE DANGEROUS: THEY ARE POISONOUS, FLAMMABLE AND SKIN IRRITANTS.

WARNING: OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THIS/THESE MATERIAL/S. USE PROTECTIVE CLOTHING, RUBBER GLOVES, GOGGLES AND A MASK.

(1) Remove the old temporary protection compound from the area to be treated with a SCRAPER - NON METALLIC , and clean with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) . Make sure that the area is dry before you continue.

4. Procedure

CAUTION: DO NOT APPLY TEMPORARY PROTECTION ON THE OXYGEN SYSTEMS. MAKE SURE THAT THE TEMPORARY PROTECTION DOES NOT GET:

ON COMPOSITE PARTS, CONTROL CABLES, PULLEYS,TEFLON BEARINGS.
ON LUBRICATED SURFACES.
IN DRAIN VALVES OR OTHER ORIFICES.

TEMPORARY PROTECTION ON OR IN THESE PARTS CAN CAUSE DAMAGE.

Subtask 53-31-00-916-065-A

A. Temporary Protection Procedure

Fuselage Internal Structure Below Cabin Floor Panels, Including Cabin Floor Structure between FR36 and FR46.

(1) Apply Corrosion Preventive Compound-Water Displacing Soft Film - (Material No.12ABC1) or Corrosion Preventive Compound-Water Displacing Soft Film - (Material No.12ABC1) or Corrosion Preventive Compound-Water Displacing Hard Film - (Material No.12ABB1) or equivalent to the fuselage internal structure below the cabin floor panels, including the cabin floor structure between FR36 and FR46.

5. Close-up
Subtask 53-31-00-410-076-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Release and fold down the insulation blankets and attach them in their initial positions.
(3) Install the cabin air supply ducts, removed to gain access to the cabin floor structure between FR36 and FR46 (Ref. AMM TASK 21-20-00-410-001).
(4) Install the lower sidewall panels between FR42 and FR46 (Ref. AMM TASK 25-23-44-400-001).
(5) Install floor panels 241HF 241GF 241FF 241EF 242FF 242GF 242HF 241MF 241LF 241KF 241JF 242KF 242LF and 242MF (Ref. AMM TASK 53-00-00-400-801).
(6) Install the equipment and furnishing, removed to get access to the cabin floor panels.
(7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 53-31-00-862-051-A

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

[Rev.8 from Aug 2017] 2026.04.02 06:29:08 UTC