Visual Inspection of the Fan Frame Assembly [CFMI]

TASK 72-23-00-210-001-A
Visual Inspection of the Fan Frame Assembly

CAUTION: TITANIUM PARTS REQUIRE THE USE OF NON-HALOGENATED SOLVENTS.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 95 and 85 lbf.in (1.07 and 0.96 m.daN )

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 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 72-00-00-200-005-A	Over-Serviceable-Limit Extensions
TASK 72-23-00-000-005-A	Removal of the Fan Duct Panels
TASK 72-23-00-000-006-A	Removal of the PS12 Line
TASK 72-23-00-280-008-A	Inspection of Aft Acoustical Panels
TASK 72-23-00-280-009-A	Inspection of Mid Acoustical Panels
TASK 72-23-00-280-025-A	Inspection of Forward Acoustical Panels
TASK 72-23-00-300-006-A	Replacement of OGV Seals
TASK 72-23-00-300-008-A	Repair of Fan Duct Panel
TASK 72-23-00-350-001-A	Removal of Rust from the Fan Frame Casing
TASK 72-23-00-400-005-A	Installation of the Fan Duct Panels
TASK 72-23-00-400-006-A	Installation of the PS12 Line
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
Fan Frame Casing, Fan Inlet Case and Abradable Cartridge - Inspection/Check
Inspection of the Outlet Guide Vane Fairing (for Aluminum OGV only)
Fan Duct Panels

3. Job Set-up
Subtask 72-23-00-941-061-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 72-23-00-010-059-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 72-23-00-040-054-A ** ON A/C NOT FOR ALL

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

Subtask 72-23-00-010-067-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 72-23-00-210-050-A ** ON A/C NOT FOR ALL

A. Visual Inspection of the Fan Frame Assembly

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Fan frame casing for: Fan Frame Casing, Fan Inlet Case and Abradable Cartridge - Inspection/Check ** ON A/C NOT FOR ALL
A.Cracks	No limits in quantity if 0.08 in. (0.03 mm) max. length and a minimum of 1 in. (25.4 mm) apart .
B.Dents or nicks on struts	No limits in quantity if, 0.08 in. (2.03 mm) max. depth
C.Corrosion (discoloration)	No limits in quantity	At the first opportunity, remove rust (Ref. AMM TASK 72-23-00-350-001)
D.Scaling or pitting	Not serviceable
2.Fan FWD Acoustical Panels (Ref. AMM TASK 72-23-00-280-025).
3.Fan MID Acoustical Panels (Ref. AMM TASK 72-23-00-280-009).
4.Fan aft Acoustical Panels (Ref. AMM TASK 72-23-00-280-008).
5.Splitter fairing for:
A.Cracks	Not serviceable	Replace the fairing (Ref. AMM TASK 72-23-00-000-006) and (Ref. AMM TASK 72-23-00-400-006)
B.Damaged protective coating	No limits in quantity
C.Erosion	No limits in quantity
6.Fan Outlet Guide Vane (OGV) inner seal for: Inspection of the Outlet Guide Vane Fairing (for Aluminum OGV only) ** ON A/C NOT FOR ALL (sheets 1 and 2 of 4)
A.Cracks	Not serviceable
B.Cracked, cut or torn seal at mating face with OGV root	No limit, if OGV do not touch the shroud	Replace seal (Ref. AMM TASK 72-23-00-300-006)
C.Local seal tear outside of OGV mating surfaces	No limit
D.Seal cut outside of OGV mating surfaces	No limit
7.Fan OGV outer fairing for: Inspection of the Outlet Guide Vane Fairing (for Aluminum OGV only) ** ON A/C NOT FOR ALL (sheet 3 and 4 of 4)
A.Piece missing of material	Any amount, any number in area A, any amount on a maximum of 5 in area B Inspection of the Outlet Guide Vane Fairing (for Aluminum OGV only) ** ON A/C NOT FOR ALL (sheet 4 of 4)
B.Crack	Any amount, any number in areas A and B
C.Missing OGV outer fairing	Maximum number = 5
D.Missing OGV bolt cover(s)	Maximum number = 20	Overserviceability. 100 hours/50 cycles with any number of bolt covers missing
8.Fan duct panels for: Fan Duct Panels ** ON A/C NOT FOR ALL
A.Missing louver	1 missing louver allowed per panel provided no more than 4 panels have this damage	Replace panel (Ref. AMM TASK 72-23-00-000-005) and (Ref. AMM TASK 72-23-00-400-005).
B.Nicks, dents or scratches	Any amount
C.Loose bolts	Not serviceable	Check for presence of washers and torque bolts to between 95 and 85 lbf.in (1.07 and 0.96 m.daN )
D.Cracks in screw hole area	One for each screw hole max length 0.25 in. (6.35 mm)	Replace panel (Ref. AMM TASK 72-23-00-000-005) and (Ref. AMM TASK 72-23-00-400-005)
E.Cracks in flanged edges	Not serviceable	Repair panel (Ref. AMM TASK 72-23-00-300-008)
F.Cracks on louver and immediate area next to louver	2 cracks allowed on the same panel	Repair panel (Ref. AMM TASK 72-23-00-300-008)
G.Fan duct panel missing	Not serviceable	Install fan duct panel(s) (Ref. AMM TASK 72-23-00-400-005)
		Refer to over serviceable limit extension (Ref. AMM TASK 72-00-00-200-005)

5. Close-up
Subtask 72-23-00-410-059-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 72-23-00-440-052-A ** ON A/C NOT FOR ALL

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

Subtask 72-23-00-410-067-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 04:03:14 UTC