AD 75-26-13

Airworthiness directive · Structural Flap Modification · Textron BH.125 Series 400A, BH.125 Series 600A, DH.125 Series 3A/R and 2 more

Effective
January 15, 1976
Models
BH.125 Series 400A, BH.125 Series 600A, DH.125 Series 3A/R, DH.125 Series 3A/RA, DH.125 Series 400A
Data sheet
TCDSA3EU
Registered aircraft
4 matched by model
Product
Aircraft · Large airplane
Amendment
39-2469

Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed January 21, 2026.

On this page

The airworthiness directive

75-26-13 HAWKER SIDDELEY AVIATION: Amendment 39-2469. Applies to 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 airplanes and to 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 airplanes.

Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished.

To prevent structural damage to the inboard end of the flaps which can result from landing on heavily watered, or slush, or snow covered runways, incorporate the structural modification to the inboard end of the flap (L/H & R/H) in accordance with the accomplishment instructions in Hawker Siddeley Aviation Ltd. Service Bulletin 27-112 (2426), Revision 1, dated March 11, 1975, or an FAA-approved equivalent.

This amendment becomes effective on January 15, 1976.

Affected TCDS · 1

The type certificate data sheets for the models this AD names, matched by model and maker.

Registered aircraft · 4

Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.

By aircraft maker
  • Hawker Siddeley4 aircraft
By year built
19681971
Registered aircraft by year built: 3 aircraft
19681
19701
19711

1 with no year recorded

By model

Aircraft