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Early Bird

Single Engine Alert: SERVICE LETTER MANDATORY SEL-55-01

STABILIZERS - TAILCONE AND HORIZONTAL STABILIZER INSPECTION

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This service document applies to all models and serial numbers listed that have more than 3000 total hours or 10 years in service.

MODELS & SERIAL NUMBERS

  • 180 — 604, 614, 30000 thru 32639
  • 180A — 32662 thru 32999, 50001 thru 50355
  • 180B — 50356 thru 50661
  • 180C — 624, 50662 thru 50911
  • 180D — 18050912 thru 18051063
  • 180E — 18051064 thru 18051183
  • 180F — 18051184 thru 18051312
  • 180G — 18051313 thru 18051445
  • 180H — 645, 18051446 thru 18051875, 18051879 thru 18052284
  • 180J — 18052285 thru 18052489, 18052491 thru 18052770
  • 180K — 18052490, 18052771 thru 18053203
  • 182 — 613, 33000 thru 33842
  • 182A — 33843 thru 34753, 34755 thru 34999, 51001 thru 51556
  • 182B — 34754, 51557 thru 51622, 51624 thru 52358
  • 182C — 631, 52359 thru 53007
  • 182D — 51623, 18253008 thru 18253598
  • 185 — 632, 185-0001 thru 185-0237 185A 185-0238 thru 185-0512 185B 185-0513 thru 185-0653
  • 185C — 185-0654 thru 185-0776
  • 185D — 185-0777 thru 185-0967
  • A185E — 185-0968 thru 18502090
  • A185F — 652, 18502091 thru 18502301, 18502311 thru 18504448

REASON

Reports have been received of cracks in the tailcone reinforcement angle, stabilizer hinge bracket and stabilizer. Noncompliance with this service letter may allow crack(s) to go undetected. Undetected cracks may cause structural failure of the horizontal stabilizer and could result in the loss of control in flight.

DESCRIPTION

This service document provides instructions to inspect the tailcone and horizontal stabilizer.

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