2 98-04-27 .I
“THE FOLLOWING WEqTeR CONjXTIONS
MAY BE ~C@@VE TO SEVERE
IN-FLIGHT ICtiG:
.
Visible rain at temperatures below 0 degrees Celsius ambient air
temperature.
.
Droplets that splash or splat&- on impact at temperatures below 0 degrees Celsius
ambient air temperature.
PROCEDURES FOR EXITING
THE SEVE,j?J3 ICtiG ENWROtiENT:
I, ..,.
These procedures are applicable to all flight phtises from takeoff to landing. Monitor the
ambient air temperature. While severe icing may form at temperatures as cold as -18 degrees
Celsius, increased vigilance is warranted at temperatures around free+ng with visible
moisture present. If the visual cues specified in the Limitations Section of the AFM for
identifying severe icing conditions are observed, accomplish the following:
Immediately request priority handling from Air Traffic Control to facilitate a route or an
Altitude change to exit the severe icing conditions in ‘order to avoid extended exposure to flight
conditions more severe than those for which the airplane has been certificated.
.
Avoid abrupt and excessive maneuvering that may exacerbate control difficulties.
t’
.
Do not engage the autopilot.
.
If the autopilot is engaged, hold the control wheel firmly and disengage the autopilot.
If an unusu& roll response
;le angle-of-attacti.’
or uncommanded roll control movement is observed, reduce
.
Do not extend flaps when holding in icing conditions.
Operation with flaps extended
can result in a reduced wing angle-of-attack, with the possibility of ice forming on the upper
surface further aft on the wing than normal, possibly aft of the protected area.
.
If the flaps are extended, do not retract them until the airframe is clear of ice.
.
Report these weather conditions to Air Traffic Control.”
(b) Incorporating the AFM revisions, as required by this AD, may be performed by the
owner/operator holding-at least a private pilot certificate as authorized by section 43.7 of the
Federal Aviation Regulations (14 CFR, 43.7), and must be entered into the
aircraft records showing
compliance with this AD in accordance with section 43.9 of the Federal Aviation Regulations
(14 CFR 43.9).
(c) Special flight permits may be issued in accordance with sections 2 1.197 and 2 1.199 of
the Federal Aviation Regulatioxis (14 CFR 21.197 and 21.199) to operate the airplane to a location
where the requirements of this AD can be accomplished.
(d) An alternative method of compliance or adjustment of the compliance time that provides
an equivalent level of safety may be approved by the Manager, Small Airplane Directorate, FAA,
1201 Walnut, suite’.900,; Kansas City, Missouri 64106. The request shall be forwarded through an
appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager,
Small Airplane Dire&orate.
NOTE 3: Information concerning the existence of approved alternative methods of compliance
with this AD, if any, mayibe obtained from the Small Airplane Directorate.
(e) All persons affected by this directive may examine information related to this AD at the
FAA, Central Region, Office of the Regional Counsel, Room 1558, 601 E. 12th Street, Kansas City,
Missouri 64 106.
(r)
This amend&nt (39-10339) becomes effective on March 13, 1998.
YFOR FURTHER INFORMATION CONTACT:
Ns, John R* Dow, Sr,,
Aerospace
Engineer, Small Airplane Directorate, Aircraft Certification Servisls,
1201 w&mt, aujte 900, Kansas City, Missouri 64106;
telephone (8 16) 426-6932;
f~imiiet
(816) 426-2169, .
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