Airworthiness Directive 98-08-22
one-timeAirworthiness Directives; Pilatus Aircraft Ltd. Model PC-7 Airplanes
What this AD requires
This amendment adopts a new airworthiness directive (AD) that applies to certain Pilatus Aircraft Ltd. (Pilatus) Model PC-7 airplanes. This AD requires inspecting the elevator and rudder attachment brackets for cracks and/or corrosion, and repairing or replacing any cracked or corrosion-damaged parts, as applicable. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by this AD are intended to prevent failure of the elevator and rudder attachment brackets because of cracks or corrosion damage, which could result in the elevator and/or rudder separating from the airplane with consequent loss of airplane control.
Which aircraft AD 98-08-22 applies to
Specific model not stated in provided applicability text. Within next 100 hours TIS after effective date, inspect elevator and rudder attachment brackets for cracks and/or corrosion per Pilatus SB No. 55-002 (Nov 7, 1997). If found, repair or replace prior to further flight per same SB. Prevents failure of elevator/rudder attachment brackets that could cause the elevator and/or rudder to separate from the airplane.
Whether AD 98-08-22 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.