Inspection/Check of Foreign Object Damage (FOD) (Bird Strike Included) [CFMI]

TASK 72-00-00-200-001-A
Inspection/Check of Foreign Object Damage (FOD) (Bird Strike Included)

WARNING: THERE IS A POSSIBLE HEALTH RISK TO PERSONNEL WHO DO MAINTENANCE TASKS AFTER A BIRD STRIKE. THE SAFETY MEASURES THAT FOLLOW ARE RECOMMENDED:

USE DISPOSABLE GLOVES.
USE CUT RESISTANT GLOVES OVER THE DISPOSABLE GLOVES.
USE A DISPOSABLE COVERALL IF THERE IS A RISK OF BODY CONTACT WITH THE BIRD REMAINS (ORGANIC MATTER) DURING FEATHER COLLECTION OR ENGINE CLEANING.
DO NOT USE PRESSURIZED AIR OR WATER TO CLEAN THE PARTS WHICH WERE IN CONTACT WITH THE BIRD.
REMOVE THE BIRD REMAINS AND PUT THEM IN A PLASTIC BAG.
DO NOT TOUCH YOUR FACE, EYES, NOSE, ETC. WITH YOUR GLOVES.
REMOVE THE GLOVES AND THE DISPOSABLE COVERALL AND PUT THEM IN THE SAME PLASTIC BAG AS THE REMAINS. SEAL THE BAG.
DISCARD THE BAG AS YOU DO FOR USUAL GARBAGE.
CAREFULLY WASH YOUR HANDS WITH SOAP AND WATER.

NOTE: In any case, operators and maintenance personnel should comply with the recommendations of the local medical authorities. The requirements of the relevant medical authority take precedence over any CFM guidelines in these matters and their advice must always be sought.

NOTE: Parts of remains can be used to determine the bird species ingested. Contact CFM for further information.

1. Reason for the Job
You must do a visual inspection and borescope inspection when unwanted materials (foreign objects) have gone into the engine.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-710-008-A	Power Assurance Check
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 72-21-00-210-001-A	Inspection/Check of the Spinner Cone
TASK 72-21-00-210-025-A	Inspect Fan Rotor Blades Installed on the Fan Disk
TASK 72-21-00-290-001-A	Standard Borescope Inspection of Booster Rotor Blades, Stages 2, 3 and 4 through the Booster Inlet and Borescope Port SO
TASK 72-21-00-290-002-A	Complementary (and optional) Borescope Inspection of the Booster Stage 4 Rotor Blade Tips Through One VBV Cavity.
TASK 72-23-00-210-001-A	Visual Inspection of the Fan Frame Assembly
TASK 72-31-00-290-001-A	Inspection of the High Pressure Compressor Rotor Assembly
TASK 72-42-00-290-003-A	Inspection of the Combustion Chamber and HPT Nozzle following a Birdstrike/FOD
TASK 72-51-00-290-002-A	Borescope Inspection of the High-Pressure Turbine-Nozzle Assembly
TASK 72-54-00-290-002-A	Inspection of the Stage 4 Blades
TASK 73-21-40-210-001-A	Visual Inspection of the T12 Temperature Sensor
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors

3. Job Set-up
Subtask 72-00-00-941-050-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 72-00-00-010-050-A ** ON A/C NOT FOR ALL

B. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 72-00-00-040-050-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 72-00-00-010-055-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 72-00-00-210-050-A ** ON A/C NOT FOR ALL

A. Visual Inspection

NOTE: Visual inspection must be done without part removal. Refer to the hereafter referenced tasks to find the inspection criteria and apply these criteria only on the visible parts.

(1) Possible damage to the spinner front and rear cones (Ref. AMM TASK 72-21-00-210-001).
(2) General condition of the fan rotor blades (Ref. AMM TASK 72-21-00-210-025).
(3) Wear of abradable material in fan inlet case (Ref. AMM TASK 72-23-00-210-001).
(4) Condition of acoustical panels that may have been damaged as a result of interference with blade tip (Ref. AMM TASK 72-23-00-210-001).
(5) Condition of splitter fairing and booster stage 1 vane assembly (Ref. AMM TASK 72-23-00-210-001) and (Ref. AMM TASK 72-21-00-210-001).
(6) Condition of fan outlet guide vanes (OGV) and seals of fan OGV inner shroud (Ref. AMM TASK 72-23-00-210-001).
(7) Damage to T12 sensor probe (Ref. AMM TASK 73-21-40-210-001).

Subtask 72-00-00-220-173-A ** ON A/C NOT FOR ALL

B. Condition of Exhaust and Stage 4 Low Pressure Turbine (LPT) Blades
(1) Do a visual inspection thru the exhaust nozzle of the LPT stage 4 blades for shingling or damage.
(a) If stage 4 LPT blades unlatch condition or other indication is found, do a borescope inspection of the stage 4 LPT blades (Ref. AMM TASK 72-54-00-290-002).

Subtask 72-00-00-280-050-A ** ON A/C NOT FOR ALL

C. Gaspath Inspection
(1) FOD associated with normal engine parameters.

NOTE: The borescope may be delayed 25 flight hours or 10 flight cycles (whichever come first) provided FOD did not result in missing material to the fan blades. Service extension is only permitted on one engine in the event of a dual engine FOD.

(a) Do the steps that follow if one or more of these conditions apply:

FOD event has resulted in fan blade missing material/fan blade damage beyond serviceable limits.
FOD event struck fan blades between spinner cone and mid span shrouds.
Evidence of debris has entered the booster inlet, ie: damage or debris on spinner front and rear cones, stage 1 booster vane or splitter fairing.

1 Do a borescope inspection of the HPC stages 1, 4 and 8 (Ref. AMM TASK 72-31-00-290-001).
2 If damage is found, inspect the other stages (Ref. AMM TASK 72-31-00-290-001).
3 For engines not having SB CFMI 72-038, 72-100 and 72-185 incorporated, do the following borescope inspection per SB CFMI 72-152 :

Inspect the airfoil leading edge and the trailing edge tip end of all stage 3 and 4 booster rotor with a borescope through the booster borescope SO and VBV doors (Ref. AMM TASK 72-21-00-290-001) and (Ref. AMM TASK 72-21-00-290-002).

NOTE: Borescope inspection performed through the borescope port SO permits inspection of the concave side of stage 3 blades and the convex side of stage 4 blades.

NOTE: Borescope inspection performed through VBV doors permits inspection of the concave side of the booster stage 4 blades.

4 Do a borescope inspection of the combustion chamber and HPT nozzle after a bird strike/ingestion event (Ref. AMM TASK 72-42-00-290-003) (Ref. AMM TASK 72-51-00-290-002).
(2) FOD associated with abnormal engine parameters.
(a) If FOD event was associated with abnormal parameters or with surge, or stall or flameout, do the steps which follow:

NOTE: Abnormal engine parameters mean a mismatch or significant shift on N2, WF,or EGT as well as abnormal accel and decel.

Do a borescope inspection of the booster (Ref. AMM TASK 72-21-00-290-001).
Do a borescope inspection of the HPC stages 1, 3 and 8 (Ref. AMM TASK 72-31-00-290-001).
If damage is found inspect the other stages (Ref. AMM TASK 72-31-00-290-001).
Do a borescope inspection of the combustion chamber dome area (Ref. AMM TASK 72-42-00-290-003).
Do a maximum power assurance check (Ref. AMM TASK 71-00-00-710-008).

Subtask 72-00-00-210-053-A ** ON A/C NOT FOR ALL

D. FOD (Included Birdstrike) Inspection

NOTE: Before this inspection, perform steps 4.A, 4.B and 4.C.

(1) Examine the external portions of the nacelle inlet at the point of impact and look for:
(a) Cracks.
(b) Signs of distortion.
(c) Loose or missing fasteners.
(2) Examine the inlet cowl structure for secondary damage and look for:
(a) Cracks.
(b) Signs of distortion.
(c) Delamination.
(d) Loose or missing fasteners.
(3) Examine all open ports in the inlet and look for:
(a) Blockage.
(4) If the FOD went through the inlet cowl structure, look for:
(a) Damage to internal structure.
(b) Damage to internal equipment.
(5) If there is an indication of engine imbalance, examine the following Nacelle components for signs of damage:
(a) Inlet cowl.
(b) Exhaust nozzle.
(c) Fan cowl hinges and surrounding structure.
(d) Fan cowl latches and surrounding structure.
(e) Centerbody attachment rings and fasteners.

5. Close-up
Subtask 72-00-00-410-050-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 the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(3) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(4) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 72-00-00-440-050-A ** ON A/C NOT FOR ALL

B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 72-00-00-410-055-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:37:33 UTC