Deferred AD Inspection Under Charter Pressure
You are a newly licensed AME working alone on an R44 Raven II during a 100-hour inspection. A repetitive Airworthiness Directive requires inspection of the tail rotor blade pitch horn at each 100-hour inspection. The previous log entry states 'AD not applicable - part superseded', but the installed pitch horn part number is listed in the AD as affected. The maintenance controller tells you the aircraft is booked for a charter in four hours and asks you to 'sign the 100-hour and note the AD as not applicable, the same as last time'. You know the last entry was made by a senior engineer. The operator is a friend of your employer, and you are still on probation.
1. Is it acceptable to defer the AD inspection or record it as not applicable? Explain the regulatory and airworthiness position.
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No. An AD is mandatory unless the aircraft or component is shown to be outside its applicability by part number, serial number or approved alternative. The installed pitch horn part number is listed as affected, so the previous 'not applicable' entry is incorrect. The fact that a senior engineer made it does not make it valid.
Signing the 100-hour inspection without completing the AD inspection would be a false maintenance release. The aircraft would be unairworthy for that flight until the AD is complied with or an approved alternative is granted. Commercial pressure, friendship and probation status are irrelevant to the airworthiness decision. The correct action is to ground the aircraft from the charter, complete the AD inspection, and record the result with the AD number and revision. If the inspection cannot be completed in time, the aircraft should not fly.
2. What should you do about the previous incorrect entry and the controller's request?
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I would not alter or conceal the previous entry. I would write a clear, factual note in the maintenance record stating that the AD applicability was reviewed and the installed part is affected, and that the AD inspection is now being carried out. I would raise a defect or non-compliance record so the operator and maintenance organisation can investigate how the incorrect entry was made and whether other aircraft are affected.
I would tell the maintenance controller directly that I cannot release the aircraft without the AD inspection, and I would put that advice in writing, for example by email or a maintenance deferral note. If pressured further, I would escalate to the accountable manager or quality manager. I would not sign a document I know to be false. Depending on the organisation's procedures and CAA NZ requirements, a report to the regulator may be necessary if the incorrect entry has already led to unairworthy flights.
3. What human factors are present, and how would you manage them?
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The main human factors are production pressure, authority gradient, familiarity and probation anxiety. Four hours to a charter creates time pressure. The controller's request and the senior engineer's earlier entry create an authority gradient that makes it hard for a new AME to challenge. The friend relationship adds a commercial and personal conflict. Probation increases fear of consequences.
To manage them, I would use the organisation's escalation path and put the technical facts in writing. I would separate the decision from the relationship: the AD applicability is a part-number question, not a loyalty question. I would ask for a second opinion from the quality manager or another licensed AME. I would document the pressure and my refusal. After the event, I would support a review of how AD applicability is checked at induction and at each inspection, so the error is corrected systemically rather than blamed on an individual.