Elementary Work on a Type-Rated Aircraft
An AME holds an M1 licence and has worked for eight years on small piston twins. A colleague calls in sick, and the shop asks the M1 AME to perform and certify a 100-hour inspection on a pressurized turboprop commuter aircraft operated under Part 703. The AME has never worked on this type, has no type course, and the maintenance manual is available. The shop argues the inspection is 'just a checklist' and that the AME's experience transfers. The aircraft is due to fly a scheduled route the next morning, and the operator has no other AME available for two days. The AME has read the inspection checklist and believes the tasks look familiar.
1. Does the M1 licence authorize this AME to certify the inspection on this aircraft? Justify your answer by reference to licence privileges and type coverage.
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No. A licence is not a general permission to certify any aircraft; it is bounded by the rating and by the type coverage attached to that rating. An M1 licence covers the category of aircraft for which it is issued, and a pressurized turboprop commuter aircraft falls outside the scope of what an M1 AME may certify. The fact that the checklist looks familiar does not expand the privilege - the limitation is legal, not a matter of confidence.
The AME must not sign the inspection. Performing the work under supervision is a different question from certifying it, but even performing it raises competence and record issues, because the AME would be working outside the scope of his training and type knowledge. The correct answer to the shop is that the aircraft cannot be released by this AME, and the operator must find a properly rated AME or accept the delay. The commercial pressure to keep the route running does not convert an unauthorized certification into a lawful one.
2. What should the AME do if the shop instructs him to sign anyway, and what are the consequences of compliance?
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The AME should refuse in writing, state the specific reason (licence scope does not cover the type), and notify the person responsible for maintenance. Refusal is protected: a licence holder cannot be required to make a certification he is not authorized or competent to make.
If he signs, the certification is invalid, and the aircraft flies without a lawful release to service - an airworthiness and enforcement exposure for both the AME and the operator. The AME faces licence suspension or cancellation and possible administrative penalties; the operator faces enforcement for operating an aircraft without a valid release. The invalid record also contaminates the maintenance history, which may require re-inspection by a qualified AME and complicate future airworthiness decisions. The right move is to escalate and let the accountable manager decide how to source a qualified AME, not to paper over the gap.