AD 87-03-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Polskie Zaklady Lotnieze Spolka zo.o | PZL M18 | Airworthiness Directives; Wytwornia Model M18 Series Airplanes |
Unsafe Condition
Loosening of the engine mount shock absorber nuts could lead to engine separation.
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Required Actions
Replace 0.8mm safety wire on M6400-105 nuts with 1.0 to 1.2mm wire as per MSB No. E/02.082/85. Visually inspect the nuts for security every 100 hours TIS and tighten if loose. Perform engine frame modification within 600 hours TIS or next engine frame removal, whichever comes first. Discontinue inspections after modification completion.
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Compliance Time
Within the next 100 hours time-in-service (TIS) unless already accomplished, with subsequent inspections every 100 hours TIS. Engine frame modification must be done within 600 hours TIS or next engine frame removal, whichever occurs first.
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Affected Aircraft
Wytwornia Model M18 Dromader airplanes with serial numbers 1Z001-01 through 1Z014-30, and 1Z015-01 through 1Z016-03.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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