AD 75-26-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | BH.125 Series 400A | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | BH.125 Series 600A | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/R | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/RA | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 400A | HAWKER SIDDELEY AVIATION Applies to DH-125, 3AR, 3ARA, 400 A, BH-125, 400 A, and 600A and Series Airplanes |
Unsafe Condition
Structural damage to the inboard end of the flaps resulting from landing on heavily watered, slush, or snow covered runways.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate the structural modification to the inboard end of the flaps (left and right) in accordance with Hawker Siddeley Aviation Ltd. Service Bulletin 27-112 (2426), Revision 1, dated March 11, 1975, or an FAA-approved equivalent.
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Compliance Time
within the next 100 hours' time in service after the effective date of this AD
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Affected Aircraft
DH-125 series 3AR (S/N 25/148 and 149); series 3ARA (S/N 25/151, 152, 153, 155, 156, 158, 159, and NA 700 through NA 710); series 400 A (S/N NA 711 through NA 752); BH-125 series 400 A (S/N NA 753 through NA 780); and series 600A (S/N 25/6001 through 6004, 6007, 6009, 6010, 6011, 6013, 6014, 6016, 6018, 6020, 6022 through 6026, 6032, 6034, 6038, 6040, 6044, 6046, 6047, and 6051)
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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