Piper ARCHER III Pilot Operating Handbook page 273

PA-28-181, ARCHER III
SECTION 4 - NORMAL PROCEDURES
BEFORE TAKEOFF:
• To transmit Mode C (Altitude Reporting) code in flight:
• Mode Selection Key - ALT
• Code Selector Keys - SELECT assigned code.
To transmit Mode A (Aircraft Identification) code in flight:
• Mode Selector Key - ON
• Code Selector Keys - SELECT assigned code.
During normal operation with the ON mode selected, the
reply indicator "R" flashes, indicating transponder replies
to interrogations.
Mode A reply codes are transmitted in ALT also; however,
Mode C codes only are suppressed when the Function
Selector ON key is selected.
SECTION 5 - PERFORMANCE
No change.
SECTION 6 - WEIGHT AND BALANCE
Factory installed optional equipment is included in the licensed weight and
balance data in section 6 of the Airplane Flight Manual.
ISSUED: JULY 12, 1995
REVISED: JANUARY 2, 2001
NOTE
NOTE
SECTION 9
SUPPLEMENT 13
REPORT: VB-1611
3 of 10, 9-73