TWIN COMANCHE C/R
F. ANTI-ICING EQUIPMENT INSTALLATION
The following items of equipment must be installed and operable to effectively cope with
normally encountered icing conditions:
I.
II.
III.
IV.
V.
1.
Wiggins Airways Wing and Tail Pump Type Pneumatic Deicing Boots installed per Wiggins
Airways S.T.C. No. SA848EA dated October 22, 1970, or FAA approved equivalent.
Wiggins Airways Alcohol Propeller Anti-Icing Kit installed per Wiggins Airways S.T.C. No.
SA8 16EA dated May 7, 1970, or FAA approved equivalent.
Piper Antennas installed per P.A.C. Dwg. 25043. No special operating instructions required.
‘Heated Pitot Head installed per P.A.C. Dwg. 26732. No special operating instructions required.
Piper Heated Glass Panel on Windshield installed per P.A.C. Dwg. 26711.
PLACARDS
a. On circuit breaker panel:
b. When heated glass panel only is installed, on instrument panel:
“Warning - This aircraft is not fully equipped for flight in icing
conditions.”
NOTE
WHEN ALL ITEMS OF EQUIPMENT LISTED ABOVE ARE
INSTALLED, PLACARD NO. 1-b. IS NOT REQUIRED.
2.
OPERATING INSTRUCTIONS
Prior to flight in conditions’where the possibility of encountering icing exists, the HEATED
PANEL assembly should be attached to the aircraft and the lead wire plug firmly inserted in
socket provided.
WSHLD
HEAT
An operational check should then be accomplished by turning the HEATED PANEL switch
Q& for a period not exceeding 30 SECONDS.
Proper operation is indicated by the glass section being warm to the touch.
If icing conditions are encountered the HEATED PANEL switch should be turned ON and
remain 9 until the icing conditions cease.
When icing is not prevalent the unit should be turned OFF. UNDER NO CIRCUMSTANCES
SHOULD THE UNIT BE TURNED ON FOR A PERIOD EXCEEDING 30 SECONDS UNLESS:
it.
The aircraft is in flight, or
Ice exists on the HEATED PANEL.
1969 FM APPROVED November 28,
ADDED: November 2,197O
REPORT: 1605 PART I PAGE 33
MODEL: PA-39
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