2.4 KiB
created, updated
| created | updated |
|---|---|
| 2023-07-16T05:22:22+02:00 | 2025-04-20T05:18 |
CFM56-5A
PW1100
| Task | Ref |
|---|---|
| Visual Insp Fan Blade Polyurethane Coat | 71-11-03-220-805 |
CFM 56-5B
Fan Blade Inspection
Leading Edge Tip Curl
There is not limit on the quantity of blades damaged when the tip curl does not extend more than dimension X1=0.5 IN. (13 MM) across the blade tip and not more than dimension X=0.5 IN. (13 MM), along the leading edge. Maximum deflection from original contour is dimension Y=0.25 IN. (6.35 MM).
A maximum of 6 blades can have tip curl up to dimension X1=1.3 IN. (33 MM) across the blade tip and dimension X=2 IN. (51 MM) along the leading edge with maximum deflection from original contour dimension Y=0.6 IN. (15 MM). Not more than 3 blades to these increased limits can be adjacent.
In all cases, deflection tip angle must not be more than 60 deg (60 deg) 60 degrees from original airfoil. Replace pair of blades if not in the limits Ref. AMM TASK 72-21-00-300-028
No continued in-service extension is permitted. See sheet 2 of Ref. Fig. Fan Rotor Blades - Local Distortions
Trailing Edge Tip Curl
There is not limit on the quantity of blades impacted when the tip curl does not extend more than dimension Z1 =0.5IN. (13 MM) across the blade tip and not more than dimension Z =0.5 IN. (13 MM) with maximum deflection from original contour dimension Y1=0.25 IN. (6.35 MM).
A maximum of 5 blades can have tip curl up to dimension Z1=1 IN. (25.4 MM) across the blade tip and up to dimension Z=1 IN. (25.4MM) along the trailing edge with maximum deflection from original contour dimension Y1=0.3 IN. (7.62 MM).
No more than 3 blades to these increased limits can be adjacent. Replace pair of blades if not in the limits Ref. AMM TASK 72-21-00-300-028.
No continued in-service extension is permitted. See sheet 2 of Ref. Fig. Fan Rotor Blades - Local Distortions
Shingled midspan shrouds
NOTE: Shingled means that the midspan shrouds are still overlapped. Not serviceable. Refer to over-serviceable-limit extensions Ref. AMM TASK 72-00-00-200-025.
!
!
!
!
!