AD 98-05-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | DH.125 Series 1A | Airworthiness Directives; Raytheon Model DH 125-1A and -3A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A-522 | Airworthiness Directives; Raytheon Model DH 125-1A and -3A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/R-522 | Airworthiness Directives; Raytheon Model DH 125-1A and -3A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/S-522 | Airworthiness Directives; Raytheon Model DH 125-1A and -3A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A | Airworthiness Directives; Raytheon Model DH 125-1A and -3A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/R | Airworthiness Directives; Raytheon Model DH 125-1A and -3A Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/RA | Airworthiness Directives; Raytheon Model DH 125-1A and -3A Series Airplanes |
Unsafe Condition
Fatigue cracking of the main entry door/frame pressing due to cyclic loading of the door frame, which could lead to loss of structural integrity of the main entry door and consequent decompression of the cabin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform an eddy current inspection within the next 150 landings or 90 days after the effective date, whichever comes first. Repeat inspections every 1,000 flight hours if no cracking is found. Repair any detected cracking before further flight.
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Compliance Time
Within the next 150 landings or 90 days after the effective date of this AD, whichever occurs earlier
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Affected Aircraft
Raytheon Model DH 125-1A and -3A series airplanes equipped with main entry door part numbers 25FC3559A, 25FC3559A/B, or 25FC3559A/C, and on which Raytheon Modification 251429 has not been accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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