86-08-07 TELEDYNE CONTINENTAL MOTORS: Letter issued April 21, 1986. Applies to TSIO-520- BE reciprocating engines with the following serial numbers installed on Piper PA-46 (Malibu) airplanes:
ENGINE SERIAL NUMBERS
528026
528222
528233
528246
528085
528223
528234
528252
528205
528224
528235
528253
528208
528225
528236
528254
528215
528226
528237
528255
528216
528227
528238
528256
528217
528228
528239
528259
528219
528229
528240
528260
528220
528230
528242
528263
528221
528231
528243
Prior to further flight, remove the engine driven fuel pump assembly (P/N 646571-1) and replace with fuel pump assembly (P/N 649374-1).
Upon request, an equivalent means of compliance with the requirements of this priority letter AD may be approved by the Manager, Atlanta Aircraft Certification Office, 1075 Inner Loop Road, College Park, Georgia 30337.
This airworthiness directive is effective upon receipt.