Airworthiness Directive · Amendment 39-15579 · Pratt & Whitney Canada Corp. (P&WC) Models PW305A and PW305B Turbofan Engines
Pratt & Whitney Canada Corp. (P&WC) Models PW305A and PW305B Turbofan Engines
This AD applies to P&WC models PW305A and PW305B turbofan engines that have a serial number (SN) listed in Table 1 of this AD. These engines are installed on, but not limited to, Bombardier Learjet M60 and Hawker Beechcraft 1000 series airplanes.
| CA0192 |
| CA0195 |
| CA0197 |
| CA0199 |
| CA0200 |
| CA0202 |
| CA0203 |
| CA0204 |
| CA0206 |
| CA0207 |
| CA0208 |
| CA0209 |
| CA0210 |
| CA0211 |
| CA0212 |
| CA0213 |
| CA0214 |
| CA0215 |
| CA0216 |
| CA0217 |
| CA0218 |
| CA0220 |
| CA0221 |
| CA0223 |
| CA0228 |
| CA0231 |
| CA0232 |
| CA0234 |
| CA0235 |
| CA0240 |
| CA0241 |
| CA0243 |
| CA0244 |
| CA0246 |
| CA0247 |
| CA0257 |
| CA0259 |
| CA0260 |
| CA0280 |
| CA0300 |
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions on all affected engines as specified in the applicability section of this AD, accomplish in accordance with P&WC Alert Service Bulletin (ASB) PW300-72-A24588, Revision 2, dated November 27, 2007:
(1) For engines with more than 5,000 hours of operating time, before next flight, inspect low-pressure (LP) compressor fan blades and replace any blade that is found to be under-minimum material condition.
(2) For engines with 5,000 or less, but more than 4,000 hours of operating time, within 30 hours of operating time from the effective date of this AD, but not later than September 30, 2008, inspect LP compressor fan blades and replace any blade that is found to be under-minimum material condition.
(3) For engines with 4,000 or less, but more than 2,500 hours of operating time, no later than September 30, 2008, inspect LP compressor fan blades and replace any blade that is found to be under-minimum material condition, in accordance with one of the following schedules, whichever occurs first:
(i) At the next first stage high-pressure compressor rotor inspection (Ref 05-20-00 scheduled maintenance checks), or
(ii) At the next scheduled opportunity where the LP compressor fan is removed (Ref. Hot Section Inspection or Overhaul Shop Visit), or
(iii) Within 300 hours of operating time from August 24, 2007.
(4) For engines with 2,500 or less hours of operating time, before it accumulates 4,000 hours of operating time, but not later than September 30, 2008, inspect LP compressor fan blades and replace any blade that is found to be under-minimum material condition.
Inspection of the fan blades for an under-minimum material condition done before the effective date of this AD that used P&WC ASB PW300-72-A24588, dated August 24, 2007; or Revision 1, dated October 26, 2007; or P&WC SB PW300-72-24595, dated October 26, 2007; or Revision 1, dated November 28, 2007, comply with the requirements specified in this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
