Is AD 90-25-16 a recurring Airworthiness Directive?

No — AD 90-25-16 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 90-25-16 apply to?

AD 90-25-16 applies to Viking Air Limited — models DHC-7-1, DHC-7-100, DHC-7-101, DHC-7-102, DHC-7-103, DHC-7. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 90-25-16

one-time

AD 90-25-16 · 1990-01-01 · airframe

Airworthiness Directives; -16 supersedes AD 90-09-02, Amendment 39-6579. This amendment (39-6827, AD 90-25-16) becomes effective on January 14, 1991. FOOTER

Which aircraft AD 90-25-16 applies to

MakesViking Air Limited

ModelsDHC-7-1, DHC-7-100, DHC-7-101, DHC-7-102, DHC-7-103, DHC-7

applicability read from the AD teaser — confirm exact model/serial from the records

Whether AD 90-25-16 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:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 90-25-16 complied with on your aircraft?

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 →

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.