Repair of the Radome

TASK 53-15-11-300-001-A
Repair of the Radome

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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

ZONE: 110

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	ABRASIVE - 280-320 GRIT SILICON CARBIDE SANDPAPER
No specific	1	ABRASIVE PAPER - 80 GRIT
No specific	1	ABRASIVE PAPER -120 GRIT
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05EML7)	Epoxy Adhesive-- - Legacy 3
(Material No.05RQB1)	Adhesive Film Tape-Erosion Protective Polyurethane - 0.36mm -
(Material No.05RSB1)	Adhesive Film Tape-Radome Erosion Protective Polyurethane -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
110	RADOME (NOSE CONE TO FR 1)

D. Referenced Information

REFERENCE	DESIGNATION
CMM 531511
CMM 531512
Temporary Repair of the Radome
Permanent Repair of the Radome

3. Job Set-up
Subtask 53-15-11-941-061-A

A. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at zone 110.

4. Procedure
Subtask 53-15-11-350-050-A

A. Temporary Repair of the Radome

Temporary Repair of the Radome

CAUTION: DO NOT PUT POLYURETHANE TAPE OR SELF-ADHESIVE PATCHES ON MORE THAN 490 cm2 (75.95 in.2) OF THE RADOME SURFACE. BEFORE YOU DO A TEMPORARY REPAIR, MAKE SURE THAT THE RADOME DOES NOT HAVE POLYURETHANE TAPE OR SELF-ADHESIVE PATCHES ON MORE THAN 490 cm2 (75.95 in.2) OF ITS SURFACE. IF THERE IS ALREADY A TEMPORARY REPAIR SOLUTION ON MORE THAN 490 cm2 (75.95 in.2) OF THE RADOME SURFACE:

DO A PERMANENT REPAIR OR
IMMEDIATELY REMOVE AND REPLACE THE RADOME.

CAUTION: A MAXIMUM OF ONE 250 mm (9.8425 in.) DIAMETER DAMAGE AREA AND FIVE 50 mm (1.9685 in.) DIAMETER DAMAGE AREAS ARE PERMITTED ON THE RADOME SHELL. IF THERE ARE ALREADY ONE 250 mm (9.8425 in.) DIAMETER DAMAGE AREA AND FIVE 50 mm (1.9685 in.) DIAMETER DAMAGE AREAS, DO NOT DO A TEMPORARY REPAIR BUT REMOVE AND REPLACE THE RADOME. THIS CAUTION IS NOT APPLICABLE TO PAINT PEELING DAMAGE.

CAUTION: DO NOT USE POLYURETHANE TAPE AND SELF-ADHESIVE PATCHES ON THE LIGHTNING STUDS. THEY HAVE AN EFFECT ON THE LIGHTNING PROTECTION OF THE RADOME.

(1) The repair procedure with Adhesive Film Tape-Erosion Protective Polyurethane - 0.36mm - (Material No.05RQB1) or Adhesive Film Tape-Radome Erosion Protective Polyurethane - (Material No.05RSB1) (do not use 5015GS or materials from the ADHETEC supplier) is applicable to the radomes that follow:

The KEVLAR radome (P/Ns D5311047700001, D5311047700002, D5311047700003, D5311047700004 and D5311047700005)
The QUARTZ radome (P/Ns D5311047700006, D5311047700007 and D53132010000)
The S2 GLASS radome (P/Ns D53132110000 and D53132210000).

(a) Remove the grease from the damaged area with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Apply Adhesive Film Tape-Erosion Protective Polyurethane - 0.36mm - (Material No.05RQB1) or Adhesive Film Tape-Radome Erosion Protective Polyurethane - (Material No.05RSB1) (do not use 5015BC, 5015GS or materials from the ADHETEC supplier) on the damaged area.
(c) Permanently repair the gouges, nicks, scratches and debonding of the aircraft skin in the next 600 Flight Hours (FH).
(2) The repair procedure with a white or gray self-adhesive patch with a diameter of 50 mm (1.9685 in.) (you can use 5015BC, 5015GS or materials from the ADHETEC supplier) is applicable to the radomes that follow:

The QUARTZ radome (P/Ns D5311047700006, D5311047700007 and D53132010000)
The S2 GLASS radome (P/Ns D53132110000 and D53132210000).

(a) Remove the grease from the damaged area with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Apply a white or gray self-adhesive patch with a diameter of 50 mm (1.9685 in.) (you can use 5015BC, 5015GS or materials from the ADHETEC supplier) on the damaged area.

NOTE: The maximum number of patches is 25 for each radome.
The minimum distance between each patch is 100 mm (3.9370 in.).

(3) The repair procedure with aluminum tape with a diameter of 25 mm (0.9843 in.) is applicable to the S2 GLASS radome only (P/Ns D53132110000 and D53132210000):
(a) Remove the grease from the damaged area with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Apply aluminum tape with a diameter of 25 mm (0.9843 in.) on the damaged area of the lightning stud.
(c) Make sure that the aluminum tape is used on the lightning studs only.

Subtask 53-15-11-350-052-A

B. Permanent Repair of the Radome

Permanent Repair of the Radome

CAUTION: MAKE SURE THAT THE DISTANCE (X) BETWEEN TWO RESIN INJECTIONS IS MORE THAN THE WIDTH OF THE LARGER RESIN INJECTION: X > MAX. DIA. IF THE DISTANCE IS LESS, DO NOT DO A SECOND RESIN INJECTION BUT A PRE-PREG REPAIR THAT INCLUDES THE FIRST INJECTION. IF THE NUMBER OF EXISTING INJECTIONS IS THE MAXIMUM PERMITTED, THE NEW INJECTION (DIA. < 50 MM) MUST INCLUDE THE PREVIOUS INJECTION IF POSSIBLE. IF IT CANNOT, YOU MUST DO A PRE-PREG REPAIR.

(1) The repair procedure with the resin injection is applicable to the radomes that follow:

The KEVLAR radome (P/Ns D5311047700001, D5311047700002, D5311047700003, D5311047700004 and D5311047700005)
The QUARTZ radome (P/Ns D5311047700006, D5311047700007 and D53132010000)
The S2 GLASS radome (P/Ns D53132110000 and D53132210000).

This permanent repair is only applicable to damage with a diameter less than or equal to 50 mm (1.9685 in.).

NOTE: The maximum number of resin injections is five for each radome.

(a) Make sure that the damaged area is dry.
(b) Rub a surface of 20 mm (0.7874 in.) to 30 mm (1.1811 in.) larger than the damaged area with ABRASIVE PAPER - 80 GRIT until you get to the anti-static paint.
(c) Then rub this area with ABRASIVE PAPER -120 GRIT and ABRASIVE - 280-320 GRIT SILICON CARBIDE SANDPAPER until the paint is completely removed.
(d) Make sure that the composite structure is not damaged.
(e) Remove the grease from the damaged area with the Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(f) Drill a 3 mm (0.1181 in.) hole at a pitch diameter of 7 mm (0.2756 in.) in the outer skin. Do this until you go to the honeycomb cells of all the damaged area.
(g) Drill the skin thickness approximately 1 mm (0.0394 in.).
(h) Remove the swarf.
(i) Carefully clean the drilled holes with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(j) Fill the syringe with Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) and fill the holes in the honeycomb until the resin overflows.
(k) Remove the unwanted resin.

NOTE: The cure time for the Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) is 24 hours at ambient temperature or one hour at a maximum of 60 DEG.C (140 DEG.F).

(l) Do a paint touch-up:
1 For all types of radome (not applicable to the S2 GLASS radome) CMM 531511
2 For the S2 GLASS radome only CMM 531512.

5. Close-up
Subtask 53-15-11-860-051-A

A. Close Access
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 12:47:35 UTC