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Airworthiness Directives (ADs)

90-JT9-037

The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.

Issue Date
2001/03/14
Applicability
JT9D-7R4D, -7R4D1, -7R4E, -7R4E1 (AI-500), -7, -7A, -7AH, -7H, -7F, and -20 series
Model Number
JT9D
CAA AD Number
90-JT9-037
Aeronautics Authority of Original AD
FAA
Original AD Number
2001-04-11
Effective Date
Subject
To prevent 1st stage high pressure turbine (HPT) disk cracking, which could result in an uncontained engine failure and damage to the aircraft.
Reference Publications (Revision/ATA/SB)
ASB JT9D A6367, JT9D-7R4-A72-563
Remarks
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