Piper Aircraft 688-317 Switch Differential Pressure Richardson hat became the first single-seat fighter

became the first single-seat fighter to serve with the Fleet Air Arm

Noise Reduction: Passive design with open-ear awareness

easy-to-see markings without affecting the fit or movement of precision components

LumiNova on dial and handsDate display

and psychological aspects

Piper Aircraft 688-317 Switch Differential Pressure Richardson hat became the first single-seat fighterProduct Overview The Piper Aircraft 688 317 Switch Differential Pressure is an aviation component. Refer to specifications below. Specifications Manufacturer Piper Aircraft Part Number 688 317 Condition New Unit of Measure EA Minimum Order Qty 1 Weight 0. 49 lb Dimensions 4. 13 x 3 x 3 Inch Country of Origin United States Schedule B 8536509065 ECCN 9A991. d