AOPA Pilot Magazine - December 2013 - 67

"The pilot reported moderate to severe
rime icing...the worst he had seen in 38
years of flying experience, and that he
had never seen ice accumulate so quickly."
minutes. Apparently those critical bits of information did not get
into the system or were ignored.
The NTSB determined the
probable cause of this accident
to be: "The airplane's encounter
with unforecasted severe icing
conditions that were characterized by high ice accretion rates
and the pilot's failure to use his
command authority to depart the
icing conditions in an expeditious manner, which resulted in
a loss of airplane control."
PILOT AND AIRCRAFT

The 45-year-old pilot held a
private pilot certificate with
an instrument rating. He had
more than 1,400 hours and held
a current second class medical certificate. His TBM flight
time was not reported. The pilot
had recently completed a simulator-based recurrent training
program where icing procedures
and escape were discussed. The
TBM is prohibited from flight in
severe icing conditions.
According to the NTSB:
"Impact damage prevented functional testing of the aircraft deice
systems. The airframe deice, propeller deice, pitot heat one and
two, and stall warning heater
switches were found in the On
positions. The inertial separator
switches were found in the Off
positions."
COMMENTARY

This Pratt & Whitney PT6
engine has an inertial separator

which is switch-activated. It
forces ice overboard rather than
allowing it to enter the engine.
Failure to deploy the separator could easily lead to a loss of
power and a subsequent stall.
The pilot 's comment about
"a little rattle" could indicate
an engine problem because of
ice ingestion, or possibly an
airframe buffet warning of an
impending stall.
The NTSB's analysis does
not note if the engine was producing power at the time of
impact, although there was
rotation of the propeller and turbine rotors. The POH warnings
about proper use of anti- and
deicing equipment are depicted
in bold print and capital letters
because a miscue or complacency can lead to the loss of
aircraft and lives.
The airmets warned of light
to moderate icing between 2,000
feet to 9,000 feet and then all the
way up to 20,000 feet. This is too
broad to be of much use operationally. Research shows ice
typically exists in bands of 2,000
feet to 4,000 feet. Moderate ice
is nasty stuff and when jets with
hot wings are reporting it, booted
light aircraft should take that as
a mandate to stay out. Non-FIKI
aircraft need not apply. Icing
airmets do not distinguish severity based on aircraft type, but it
does make a difference, and pilots
should pay heed.
Where moderate icing locations are well established, as

they seemed to have been on
this December morning, controllers should consider providing
unrestricted climb and descent
clearances through those altitudes. Pilots, likewise, should ask
for the same if there is any doubt
about their ability to remain in
the ice-impacted altitudes.
Pilots also must be actively
inquisitive about ice, and they
must ensure that aircraft antiice and deice systems are used
early and often. In moderate to
severe conditions, don't suffer
in silence-immediately advise
ATC that you've got a problem
and if there's any doubt, declare
an emergency.
It is troubling that in some of
the busiest airspace in the world,
critically urgent icing information was not passed to the pilot
or to the forecasters. There were
numerous pireps indicating
potential danger lurking.
Icing/instrument meteo rological condition forecasts
and airmets can be verified by
using pireps if we have enough
of them. There should be more,
and the process for feeding them
into weather forecasting and dissemination needs attention. It's
something that the Air Safety
Institute has been advocating
for more than a decade, and even
tested with FAA collaboration in
2005 and 2006-with promising
results. It's time to reopen that
discussion.
AOPA
WEB

www.airsafetyinstitute.org
www.aopa.org/pilot  AOPA PILOT  |  67


http://www.airsafetyinstitute.org http://www.aopa.org/pilot

AOPA Pilot Magazine - December 2013

Table of Contents for the Digital Edition of AOPA Pilot Magazine - December 2013

AOPA Pilot Magazine - December 2013
Contents
President’s Position
Visual Approach
Letters
Waypoints
Proficient Pilot
Foundation Focus
License to Learn
Pilot Counsel
Fly Well
What Happens in Vegas...
AOPA Sweepstakes
Aviation Jobs
Gift Guide
Pilot Products
Pilot Products
News
People
Yacht of the Air
Around the World in 25 Days
Aviation Legends Walter Extra
Safety Pilot Landmark Accident: Unpredicted, Unadvised, Unaware
Summit 2013: Meeting Mr. Baker
Technique
Proficiency
Wx Watch
Technology
Ownership
Frugal Flier
Never Again
State and Local Action
Member Products
AOPA Foundation
Member Services
Government Affairs
AOPA Insurance Agency
Fly by Wire
Pilots
AOPA Pilot Magazine - December 2013 - AOPA Pilot Magazine - December 2013
AOPA Pilot Magazine - December 2013 - Cover2
AOPA Pilot Magazine - December 2013 - Contents
AOPA Pilot Magazine - December 2013 - 2
AOPA Pilot Magazine - December 2013 - 3
AOPA Pilot Magazine - December 2013 - President’s Position
AOPA Pilot Magazine - December 2013 - 5
AOPA Pilot Magazine - December 2013 - 6
AOPA Pilot Magazine - December 2013 - 7
AOPA Pilot Magazine - December 2013 - 8
AOPA Pilot Magazine - December 2013 - 9
AOPA Pilot Magazine - December 2013 - Visual Approach
AOPA Pilot Magazine - December 2013 - 11
AOPA Pilot Magazine - December 2013 - Letters
AOPA Pilot Magazine - December 2013 - 13
AOPA Pilot Magazine - December 2013 - 14
AOPA Pilot Magazine - December 2013 - 15
AOPA Pilot Magazine - December 2013 - Waypoints
AOPA Pilot Magazine - December 2013 - 17
AOPA Pilot Magazine - December 2013 - Proficient Pilot
AOPA Pilot Magazine - December 2013 - 19
AOPA Pilot Magazine - December 2013 - Foundation Focus
AOPA Pilot Magazine - December 2013 - 21
AOPA Pilot Magazine - December 2013 - License to Learn
AOPA Pilot Magazine - December 2013 - 23
AOPA Pilot Magazine - December 2013 - Pilot Counsel
AOPA Pilot Magazine - December 2013 - 25
AOPA Pilot Magazine - December 2013 - Fly Well
AOPA Pilot Magazine - December 2013 - 27
AOPA Pilot Magazine - December 2013 - What Happens in Vegas...
AOPA Pilot Magazine - December 2013 - 29
AOPA Pilot Magazine - December 2013 - AOPA Sweepstakes
AOPA Pilot Magazine - December 2013 - 31
AOPA Pilot Magazine - December 2013 - Aviation Jobs
AOPA Pilot Magazine - December 2013 - 33
AOPA Pilot Magazine - December 2013 - Gift Guide
AOPA Pilot Magazine - December 2013 - Pilot Products
AOPA Pilot Magazine - December 2013 - Pilot Products
AOPA Pilot Magazine - December 2013 - 37
AOPA Pilot Magazine - December 2013 - News
AOPA Pilot Magazine - December 2013 - 39
AOPA Pilot Magazine - December 2013 - People
AOPA Pilot Magazine - December 2013 - 41
AOPA Pilot Magazine - December 2013 - Yacht of the Air
AOPA Pilot Magazine - December 2013 - 43
AOPA Pilot Magazine - December 2013 - 44
AOPA Pilot Magazine - December 2013 - 45
AOPA Pilot Magazine - December 2013 - 46
AOPA Pilot Magazine - December 2013 - 47
AOPA Pilot Magazine - December 2013 - 48
AOPA Pilot Magazine - December 2013 - 49
AOPA Pilot Magazine - December 2013 - Around the World in 25 Days
AOPA Pilot Magazine - December 2013 - 51
AOPA Pilot Magazine - December 2013 - 52
AOPA Pilot Magazine - December 2013 - 53
AOPA Pilot Magazine - December 2013 - 54
AOPA Pilot Magazine - December 2013 - 55
AOPA Pilot Magazine - December 2013 - 56
AOPA Pilot Magazine - December 2013 - 57
AOPA Pilot Magazine - December 2013 - 58
AOPA Pilot Magazine - December 2013 - 59
AOPA Pilot Magazine - December 2013 - Aviation Legends Walter Extra
AOPA Pilot Magazine - December 2013 - 61
AOPA Pilot Magazine - December 2013 - 62
AOPA Pilot Magazine - December 2013 - 63
AOPA Pilot Magazine - December 2013 - Safety Pilot Landmark Accident: Unpredicted, Unadvised, Unaware
AOPA Pilot Magazine - December 2013 - 65
AOPA Pilot Magazine - December 2013 - 66
AOPA Pilot Magazine - December 2013 - 67
AOPA Pilot Magazine - December 2013 - Summit 2013: Meeting Mr. Baker
AOPA Pilot Magazine - December 2013 - 69
AOPA Pilot Magazine - December 2013 - 70
AOPA Pilot Magazine - December 2013 - 71
AOPA Pilot Magazine - December 2013 - Technique
AOPA Pilot Magazine - December 2013 - 73
AOPA Pilot Magazine - December 2013 - 74
AOPA Pilot Magazine - December 2013 - 75
AOPA Pilot Magazine - December 2013 - Proficiency
AOPA Pilot Magazine - December 2013 - 77
AOPA Pilot Magazine - December 2013 - 78
AOPA Pilot Magazine - December 2013 - Wx Watch
AOPA Pilot Magazine - December 2013 - 80
AOPA Pilot Magazine - December 2013 - Technology
AOPA Pilot Magazine - December 2013 - 82
AOPA Pilot Magazine - December 2013 - Ownership
AOPA Pilot Magazine - December 2013 - 84
AOPA Pilot Magazine - December 2013 - 85
AOPA Pilot Magazine - December 2013 - Frugal Flier
AOPA Pilot Magazine - December 2013 - 87
AOPA Pilot Magazine - December 2013 - Never Again
AOPA Pilot Magazine - December 2013 - 89
AOPA Pilot Magazine - December 2013 - 90
AOPA Pilot Magazine - December 2013 - 91
AOPA Pilot Magazine - December 2013 - State and Local Action
AOPA Pilot Magazine - December 2013 - 93
AOPA Pilot Magazine - December 2013 - Member Products
AOPA Pilot Magazine - December 2013 - 95
AOPA Pilot Magazine - December 2013 - AOPA Foundation
AOPA Pilot Magazine - December 2013 - 97
AOPA Pilot Magazine - December 2013 - Member Services
AOPA Pilot Magazine - December 2013 - 99
AOPA Pilot Magazine - December 2013 - Government Affairs
AOPA Pilot Magazine - December 2013 - 101
AOPA Pilot Magazine - December 2013 - AOPA Insurance Agency
AOPA Pilot Magazine - December 2013 - 103
AOPA Pilot Magazine - December 2013 - 104
AOPA Pilot Magazine - December 2013 - 105
AOPA Pilot Magazine - December 2013 - 106
AOPA Pilot Magazine - December 2013 - Fly by Wire
AOPA Pilot Magazine - December 2013 - 108
AOPA Pilot Magazine - December 2013 - 109
AOPA Pilot Magazine - December 2013 - 110
AOPA Pilot Magazine - December 2013 - 111
AOPA Pilot Magazine - December 2013 - Pilots
AOPA Pilot Magazine - December 2013 - Cover3
AOPA Pilot Magazine - December 2013 - Cover4
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