AD 80-11-04 Cracked Nutplates
June 2, 1980
This AD applies to all Cessna 150F-M, all A150s, All F150s, FA150s, FRA150s, and ’78-’80 152s and A152s. (In other words, all swept tail 150s, and the early 152s)
This AD requires visual inspection of the 8 nutplates installed on the Vertical Fin attach brackets for cracks which, if allowed to go undetected, could result in the separation of the vertical or vertical and horizontal tail assembly. This visual inspection is required every 100 hours.
Compliance with this AD is no longer required if the nutplates are replaced with nuts.
80-11-04 CESSNA: Amendment 39-3782. Applies to the following models and serial number airplanes certificated in all categories:
COMPLIANCE: Required as indicated unless already accomplished.
To detect cracked NAS 1068A4 nutplates which, if allowed to go undetected, could result in separation of the vertical or vertical and horizontal tail assembly from the airplane, within 100 hours time-in-service after the effective date of this AD, and every 100 hours time-in-service thereafter, accomplish the following:
A) Using a suitable light and mirror visually inspect the eight NAS 1068A4 nutplates installed on the Part Number 0432004-9 vertical fin aft attach bracket for cracks in the threaded part (nut body) and/or base of the nutplate and replace any cracked nutplates prior to further flight.
B) Compliance with this AD is no longer required if the NAS 10684A nutplates are replaced with AN365-428, MS20365-428, MS2l042L4 or MS21044N4 nuts.
C) Any equivalent method of compliance with this AD must be approved by the Chief, Aircraft Certification Program, Room 238, Terminal Building 2299, Mid-Continent Airport, Wichita, Kansas 67209.
NOTE: Cessna Single Engine Service Information Letter SE79-49, Revision # 1, dated April 28, 1980, pertains to the subject.
The AD supersedes AD 78-07-10, Amendment 39-3174 (43 FR 14958, 14959).
This Amendment 39-3782 becomes effective June 2, 1980.