70-15-05 SHORT BROTHERS AND HARLAND, LIMITED: Amdt. 39-1032. Applies to Model SC-7, series 3 airplanes.
To alert the pilot to hazardous errors in the indicated altitude and airspeed when the stand-by static system is used, within the next 25 hours' time in service from the effective date of this AD, unless already accomplished, accomplish the following:
(a) Install the altimeter stand-by correction label P/N SC7-18-5365 on the instrument panel above the pilot's altimeter in accordance with Shorts Service Bulletin No. 31-53, dated January 9, 1970, or later ARB-approved issue or an FAA-approved equivalent.
(b) Replace the existing airspeed indicator placard P/N SC7-18-5093 on the 1 D panel with a new placard, P/N SC7-18-5409, in accordance with Shorts Service Bulletin No. 31- 51, dated January 9, 1970, or later ARB-approved issue or an FAA-approved equivalent.
This amendment becomes effective July 20, 1970.