Bell Helicopter ALERT SERVICE BULLETIN:TURBOSHAFT ENGINE COMPRESSOR DISC INSPECTION OF AND RETAINING NUT REPLACEMENT(3)

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CATEGORY 3 -
For engines that have had a previous shop visit and have accumulated 2700 compressor turbine (CT) cycles or more since shop visit. P&WC recommends to do this service bulletin within the next 400 hrs or 8 months whichever occurs .rst.
For engines that have never had a shop visit and have accumulated 4000 CT cycles or more since new. P&WC recommends to do this service bulletin within the next 400 hrs or 8 months whichever occurs .rst.

NOTE: For engines that have fewer than the cycles indicated above, the engines may continue in operation until the above cycles are reached. When the engine reaches the applicable cycles, P&WC recommends to do this service bulletin per the above. Do all spare engines.
F. Approval
D.O.T./D.A.A. approved.
G. Weight and Balance
None.

H. Electrical Load Data
Not changed.

I. Software Accomplishment Summary
Not changed.

J. References
Applicable PW200 Technical Manuals
SB28005, SB28050, SB28128

K. Publications Affected
Applicable PW200 Technical Manuals
P&WC Proprietary Information. Subject to the restrictions on the back of the locator.
Apr 28/2006 PW200-72-28280

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PRATT & WHITNEY CANADA

SERVICE BULLETIN

P&WC S.B. No. 28280
TURBOSHAFT ENGINE
COMPRESSOR DISC INSPECTION OF AND RETAINING NUT REPLACEMENT

1.  Planning Information (Cont’d)
L.  Interchangeability and Intermixability of Parts
Interchangeability -Refer to Para. 2.D.
Intermixability -Not changed.

2.  Material Information
A.  Industry Support Information
Not applicable.

B.  Material -Cost and Availability
You can get the procurable parts listed in Para. 2.D. from any Pratt & Whitney Canada
Parts Distribution Center.
The estimated total cost of new parts needed to replace old parts is $Quote (US, 2006).
The new parts are available.

C.  Manpower
Once engine is removed from helicopter
Once you have access to the part, an estimate of 8.0 man-hours is required to include this service bulletin at maintenance.
No more man-hours are necessary to include this service bulletin at overhaul.
D.  Material Necessary for Each Engine
The quantity of materials listed in this section is on a per engine basis.
Est. Unit List Price ($US, Instructions New P/N Keyword Old P/N Qty 2006) Disposition
PW206A, PW206B, PW206B2, PW206C, PW206E, PW207C, PW207D, PW207E, PW207K
3072307-01  Nut, Retaining, CPRSR 3116024-02 1 Quote (A)(B) Turbine Disc
3072308-01 Washer, Key 3044093-01 1 Quote (A)(B) ST3397-54 Ring, Retaining AS3217-131 1 Quote (A)(B)
P&WC Proprietary Information. Subject to the restrictions on the back of the locator.
Apr 28/2006 PW200-72-28280

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PRATT & WHITNEY CANADA
　
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