Piper PA-28-161 Pilot Operating Handbook page 240

PIPER AIRCRAFT CORPORATION
PA-28-161, WARRIOR II
Figure 7-3 (cont)
·SECTION 9
SUPPLEMENT
7
II. NAVIGATION (NAY) MODE SELECTOR BUTTO:"J - When
pushed. will select the Navigation mode. The mode provides all
angle intercept (with HSI) or a fixed angle intercept of 45° (with
DG). automatic beam capture and tracking of YOR, RNAY or
LOC signals. The N A V annunciator will flash until the automatic
capture sequence is initiated.
12. HEADING (HDG) MODE SELECTOR BUTTON - When
pushed. will select the Heading mode, which commands the air-
plane to turn to and maintain the heading selected by the heading
bug on the DG or HSJ. A new heading may be selected at any time
and will result in the airplane turning to the new heading with a
maximum bank angle of about 20°. Selecting HOG mode will
cancel i-IAY, APR or BC track modes.
!3. ALTITUDE HOLD (ALT) MODE SELECTOR BUTTON -
When pushed, will select the Altitude Hold mode. which commands
the airplane to maintain the pressure altitude existing at the
moment of selection. Engagement may be accomplished in climb,
descent, or level flight. In the APR mode. altitude hold will auto-
matically disengage when the glide slope is captured.
ISSUED: AUGUST 13, 1982 REPORT: VB-1180
17
of 26,
9-63