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.