Piper ARCHER III Pilot Operating Handbook page 344

SECTION9
SUPPLEMENT 10
SECTION 1 - GENERAL
An optional second oil cooler is intended co increase the operational flexibility
of the aircraft in extreme high temperature environments.
1.11 OIL
(a) Oil Capacity (U.S. quarts)
With the addition of the second oil cooler and
associated hoses, the total capacity of the oil
system will be approximately 9 quarts. However,
approximately I quart of oil will remain in the
system after engine shutdown and not drain into
the engine oil sump. Continue to use the 8 quart
marking on the oil dipstick as the maximum
capacity indication and the 2 quart marking as the
minimum capacity indication.
SECTION 2- LIMITATIONS
The addition of a second oil cooler significantly increases the capability of the
engine oil system to reject heat. As a result, the cylinder heads, rather than the
engine oil, could become the critical limiting engine component for cooLing at
high outside air temperatures. This requires the addition of a 500
head temperature limitation and the display of cylinder head temperatures on
the ENGINE page of the 01000 NXi system. CAS messages have been added
to alert the pilot should cylinder head temperatures approach (CAUTION) or
exceed (WARNING) this limit.
2.7 POWERPLANT LIMITATIONS
(d) Engine Operating Limits
( l l)Cylinder Head Temperature
REPORT: VB-2749
I 9-66, 2 or 6
PA-28-181, ARCHER ill
NOTE
ISSUED: December 22, 2017
REVISED: July 15, 2020
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9
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°
F cylinder
°
500 F
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