Repair of the Inlet Cone Fairing - VRS1714 [IAE]

TASK 72-38-11-300-010-A
Repair of the Inlet Cone Fairing - VRS1714

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	MAT - WORK
No specific	AR	SCRAPER - NON METALLIC
No specific	AR	SPATULA - NON METALLIC
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-124)	Isopropyl Alcohol, Technical grade
(Material No.V05-016)	garnet paper
(Material No.V05-017)	garnet paper
(Material No.V05-019)	Waterproof silicon carbide abrasive paper
(Material No.V05-020)	waterproof silicon carbide
(Material No.V06-064)	Fluorescent penetrant
(Material No.V08-013)	cold curing silicone
(Material No.V08-014)	primer

C. Referenced Information

REFERENCE	DESIGNATION
TASK 70-30-00-918-010-A	Consumable Materials Index
TASK 72-38-11-000-010-A	Removal of the Inlet Cone
TASK 72-38-11-400-010-A	Installation of the Inlet Cone
Repair details and dimensions

3. Job Set-up
Subtask 72-38-11-941-054-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 72-38-11-941-055-A ** ON A/C NOT FOR ALL

B. Put the Ground Support Equipment in Position
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the engine intake.
(2) Put the MAT - WORK in position in the intake cowl.

NOTE: Make sure that the red warning pennants on the workmat can be seen external to the aircraft.

NOTE: Make sure that the workmat has sufficient dimensions to give full protection to the lower half of the intake cowl.

4. Procedure
Subtask 72-38-11-350-050-A ** ON A/C NOT FOR ALL

A. Remove the Inlet Cone Fairing (Ref. AMM TASK 72-38-11-000-010).

Subtask 72-38-11-220-050-A ** ON A/C NOT FOR ALL

B. Examine and identify the damaged strip seal of the inlet cone fairing.

Subtask 72-38-11-350-051-A ** ON A/C NOT FOR ALL

C. Remove the damaged strip seal.
(1) Remove the damaged strip seal taking care not to damage the parent material.
(2) Remove any remaining compound using a SCRAPER - NON METALLIC, Waterproof silicon carbide abrasive paper (Material No.V05-019) and/or waterproof silicon carbide (Material No.V05-020) (Ref. AMM TASK 70-30-00-918-010).

Subtask 72-38-11-230-050-A ** ON A/C NOT FOR ALL

D. Do a crack test on the repaired area using Fluorescent penetrant (Material No.V06-064) (Ref. AMM TASK 70-30-00-918-010).

Subtask 72-38-11-350-052-A ** ON A/C NOT FOR ALL

E. Prepare the mating surfaces for the silicon rubber compound.

Repair details and dimensions ** ON A/C NOT FOR ALL

(1) Prepare the seal strips
(a) Cut the strip seal, 5A1255 or 5A1837 to the dimensions given in the figure.
(2) Degrease the mating surfaces of the fairing and strip seal using V01-124Isopropyl Alcohol, Technical grade (Ref. AMM TASK 70-30-00-918-010).
(3) Hand clean the mating surfaces of the fairing and strip seal using garnet paper (Material No.V05-016) or garnet paper (Material No.V05-017) (Ref. AMM TASK 70-30-00-918-010).
(4) Degrease the mating surfaces of the fairing and strip seal using V01-124Isopropyl Alcohol, Technical grade (Ref. AMM TASK 70-30-00-918-010).

Subtask 72-38-11-360-050-A ** ON A/C NOT FOR ALL

CAUTION: AFTER PREPARATION, MAKE SURE THAT THE MATING SURFACES ARE FULLY CLEANED. DO NOT TOUCH THE MATING SURFACES BY HAND TO PREVENT CONTAMINATION.

CAUTION: DO NOT APPLY THE PRIMER TO THE MATING SURFACE OF THE STRIP SEAL.

F. Apply and Cure the Cold Curing Silicone Rubber Compound.

Repair details and dimensions ** ON A/C NOT FOR ALL

NOTE: Apply the primer immediately after the mating surfaces are prepared. If the parts are not used immediately, after the primer is applied, they must be kept in polythene bags but for not longer than 24 hours.

(1) Apply a thin layer of primer (Material No.V08-014) only to the prepared mating surfaces of the fairing. Dry in the air for 30 minutes.
(2) Apply the cold curing silicone (Material No.V08-013) compound to each of the mating surfaces using a SPATULA - NON METALLIC (Ref. AMM TASK 70-30-00-918-010).

NOTE: Install the strip seal to the fairing within three minutes after the compound is applied.

(3) Install the strip seals on the fairing.
(4) Clamp the strip seals and fairing with washing clips or equivalent during curing.
(5) Remove excess adhesive compound from the fairing and strip seals using a SCRAPER - NON METALLIC.
(6) Make sure that the compound can be seen around the sealed surfaces.
(7) Cure the compound at room temperature for 48 hours.

NOTE: The parts can be touched after 12 hours.

(8) Remove the clips from the fairing.

Subtask 72-38-11-220-051-A ** ON A/C NOT FOR ALL

G. Dimensionally examine the position of the repaired strip seals.

Subtask 72-38-11-220-052-A ** ON A/C NOT FOR ALL

H. Visually examine gapping and filling of the compound.

Subtask 72-38-11-350-053-A ** ON A/C NOT FOR ALL

I. Identify the repair.
(1) A logbook entry is necessary when you have completed this repair. Write VRS1714 in the engine logbook.
(2) At the next shop visit make a mark VRS1714 adjacent to the assembly number. Use the electrolytic etch method.

Subtask 72-38-11-350-054-A ** ON A/C NOT FOR ALL

J. Install the Inlet Cone Fairing (Ref. AMM TASK 72-38-11-400-010).

5. Close-up
Subtask 72-38-11-942-053-A ** ON A/C NOT FOR ALL

A. Remove the ground support equipment
(1) Remove the workmat from the air intake cowl.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:46:08 UTC