Engine Total Time Since New: __________Flight Hrs
Engine Total Time Since O/H: __________Flight Hrs
Engine Total Cycles as reflected in Data Collection Unit
Impeller: _________ CT:_________ PT: __________
Results of last Power Assurance Check before SB accomplishment:
________deg C mgt margin, ___________% Ng Margin
Results of Power Assurance Check after SB accomplishment:
________deg C mgt margin, ___________% Ng Margin
SERVICE BULLETIN FINDINGS:
Engine was inspected and found to have
1) Damage to CT Disc bore: Yes _____ No _____
2) Bent or Cracked CT Nut Castellations: Yes _____ No _____
3) Improperly secured Retaining Ring or Key Washer : Yes _____ No _____
REMARKS:
C110041
Engine Data Sheet
Figure 3
P&WC Proprietary Information. Subject to the restrictions on the back of the locator.
Apr 28/2006 PW200-72-28280
Page 11 of 12
PRATT & WHITNEY CANADA
SERVICE BULLETIN
P&WC S.B. No. 28280 TURBOSHAFT ENGINE COMPRESSOR DISC INSPECTION OF AND RETAINING NUT REPLACEMENT
4. Appendix
TABLE 1, Nut, Retaining, Compressor Turbine Disc
Dim. for Ref. Limits
REF. inches (mm) inches (mm)
NO. IFR Name Min. Max. Min. Max. Replace
Post-SB28280
1302, TIGHTEN TO 1248
3401 -1272 LBF-IN (141.00 -
143.74 N.m), LOOSEN
TO 0 LBF-IN (0 N.m),
RETIGHTEN TO 120
LBF-IN (13.56 N.m),
THEN ROTATE THE
NUT A FURTHER 12°,
ALIGN ONE SET OF
SLOTS BY ROTATING
THE NUT IN THE
DIRECTION OF
INCREASING
TORQUE (TO A MAX
OF 2.5°), FINAL
TORQUE MUST NOT
EXCEED 1450 LBF-IN
(163.83 N.m).
P&WC Proprietary Information. Subject to the restrictions on the back of the locator.
Apr 28/2006 PW200-72-28280
Page 12 of 12
