Piper ARROW III Service Manual

Revised: 2/13/89
2G3
CHEROKEE ARROW III SERVICE MANUAL
INSTRUMENTS
TABLE X-V. ALTIMETER (cont)
Trouble Cause Remedy
Barometric scale and Slippage mating Replacement instrument.
reference markers out parts.
of synchronism.
Barometric scale and Drift in mechanism. Refer to latest revision
reference markers out of AC43.13-1A.
of synchronism with
pointers.
NOTE
When any connections in the static system are opened for check, system
must be rechecked per Part 23.1325.
10-35. REMOVAL AND REPLACEMENT. (Refer to Paragraph 10-76 of this section.)
10-36. AIRSPEED INDICATOR.
10-37. GENERAL. The airspeed indicator provides a means of indicating the speed of the airplane passing
through the air. The airspeed indication is the differential pressure reading between pitot air to pressure and
static air pressure. This instrument has the diaphragm vented to the pitot air source and the case is vented to the
static air system. As the airplane increases speed, the pitot air pressure increases, causing the diaphragm to
expand. A mechanical linkage picks up this motion and moves the instrument pointer to the indicated speed.
The instrument dial is calibrated in knots and miles per hour and also has the necessary operating range
markings for safe operation of the airplane.
10-38. TROUBLESHOOTING.
TABLE X-VI. AIRSPEED TUBES AND INDICATOR
Trouble Cause Remedy
Pointers of static Leak in instrument case Check for leak and seal.
instruments do not or in pitot lines.
indicate properly.
Pointer of instrument Defective mechanism. Replace instrument.
oscillates.

Piper ARROW III Specifications

General

Manufacturer	Piper Aircraft
Model	ARROW III
Engine	Lycoming IO-360-C1C6
Horsepower	200 hp
Maximum Takeoff Weight	2, 750 lb (1, 247 kg)
Seating Capacity	4
Propeller	2-blade, constant speed
Length	24 ft 7 in (7.49 m)