AD 70-22-02

70-22-02 AIRBORNE MANUFACTURING CO.: (formerly Airborne Mechanisms). Amdt. 39-1095. Applies, except as noted, to all model 1H7, 1H10, 1H16, and 1H26 series fuel selector valves installed on, but not necessarily limited to:

Piper PA-28-235 Piper PA-32-260 Piper PA-32-300 Piper PA-32S-300 Piper PA-30 Piper PA-39

NOTE: 1H7 series valves identified with a number 4-R, 5-R, etc. and subsequent letter codes, (appearing on manufacturer's plate directly underneath the valve model number) and 1H26 series valves with a number 6-R, 7-R, etc. and subsequent letter codes, (appearing at same location noted above) are equipped with a production roll pin retaining sleeve and are not affected by this AD. Additionally, some earlier manufactured valves have slotted keyway control arms and shafts. These valves are also not affected by this AD. The alpha-numeric representation identifies the month and year a valve was manufactured. For example, 4-R indicates that the valve was manufactured during April, 1970.

Compliance required within the next 50 hours in service after the effective date of this AD, unless already accomplished.

To prevent the possibility of engine fuel starvation resulting from the inability to operate the fuel selector valve due to loss of the control arm roll pin, accomplish the following:

a. Inspect the fuel selector valve control arm and ascertain that the roll pin is in place.

b. Install pin retaining kit, Airborne P/N 2T18-1 (Piper P/N 760444 or 760438V), consisting of spring clip, Airborne P/N D1-61-1 (Piper P/N 757638) and sleeve, Airborne P/N A9-78-1 (Piper P/N 757639), as follows:

1. Lift quick drain shaft and insert slot of sleeve around shaft ensuring that groove in sleeve faces downward. Then press protruding portion of spring clip against hub and slide the entire assembly down over the hub.

NOTE: Do not attempt to retract the spring clip by prying with pointed tool.

2. Rotate sleeveand spring clip assembly around the hub until protruding portion of the spring clip snaps into the bore of the roll pin.

3. Paint 1/4" diameter red dot, using indelible ink, on fuel selector arm immediately adjacent to the newly installed retaining sleeve.

Upon submission of substantiating data through an FAA maintenance inspector by an owner or operator, the Chief, Engineering & Manufacturing Branch, FAA, Eastern Region may adjust the compliance time specified in this Airworthiness Directive.

(Piper Aircraft Corporation Service Bulletin Nos. 311 and 314 both dated 5 June 1970 pertain to this same subject.)

This amendment is effective November 4, 1970.