Document ID: chunk:federal_register_of_legislation:F2022L00556:body:0:p2
Version: federal_register_of_legislation:F2022L00556
Segment Type: other
Provision Reference: 
Character Range: 3052–4490

For FRA150L and FRA150M aircraft, inspect within 100 hours' time in service after 26 October 2006, and thereafter at intervals not exceeding 100 hours' time in service until the affected nutplates are replaced (See Requirement Note 2).
             For all other aircraft, inspect within 100 hours' time in service after
             31 November 1984, and thereafter at intervals not exceeding 100 hours' time in service until the affected nutplates are replaced (See Requirement Note 2). The compliance time for these aircraft is unchanged.
             This AD commences on 11 April 2022.
Background:  Cracked vertical fin attachment nutplates have been found on in-service aircraft.  Undetected cracking could result in structural failure and consequent separation of the vertical or vertical and horizontal tail assembly from the aircraft.
             Amendment 3 corrected aircraft applicability so as to only include aircraft fitted with the fabricated attach bracket.
             Amendment 4 was issued to introduce optional terminating action to the inspection requirements of this Directive, as specified in EASA AD 2006-0267 and FAA AD 80-11-04; and to include Models FRA150L and FRA150M aircraft.
             Amendment 5 is issued to exclude pre 1966 aircraft from the AD effectivity to align with Cessna SIL SE79-49 Revision 1 and FAA AD 80-11-04.

David Punshon
Delegate of the Civil Aviation Safety Authority
1 April 2022