Atsc 231 Block 1
Private pilots Part 91 weather-related accident rate peaks at how much flight time?
150 - 175 hours
Weather related accidents account for what percentage of all aircraft accidents?
20.1%
How many different levels of service standards are there for ASOS?
4
Which of the following is not a disadvantage of the ceiling height sensor of an ASOS?
It reports more broken than overcast due to packing
Which service standard level is the Grand Forks ASOS?
Level A
Which ASOS service standard provides no augmentation?
Level D
What type of observation was made at KGWR at 1635Z?
METAR
What METAR remark group indicates that precipitation was recorded by the AWPAG of the ASOS?
P
Why was a special observation required at KJMS at 1726Z?
ceiling and visibility
Weather related aircraft accidents have been increasing over the period 2003 to 2007 according to the ASIAS study.
false
Most Part 135 weather-related accidents cause what type of injury?
fatal
What ASOS sensor measures temperature and dew point?
hygrothermometer
Would a special (SPECI) observation be made if the visibility decreased from 1 1/2 sm to 1 sm?
no
Would a special (SPECI) observation be made if the visibility decreased from 1 3/4 sm to 1 1/4 sm?
no
Would a special (SPECI) observation be made if the visibility increased from 3 sm to 4 sm?
no
Most aircraft involved in a Part 91 weather-related accidents were engaged in what type of operation?
personal use
_____ is the term used to describe the cause of an accident involving an airworthy aircraft where the pilot is considered to be principally or partially responsible.
pilot error
What is the difference between mist and haze as reported by an ASOS?
the temperature - dew point spread is less for mist
Which of the following is not an advantage of automated surface weather observing systems?
they are more expensive than human observations
The National Transportation Safety Board (NTSB) Part 830 defines a serious injury as any injury that results in a fracture of any bone except simple fractures of fingers, toes or nose.
true
The intensity of snow reported by an ASOS depends on visibility.
true
Most weather related accidents under Part 135 operations resulted from
visibility and ceiling
Most weather related accidents under Part 91 operations resulted from
wind
Would a special (SPECI) observation be made if the ceiling decreased from 3,000 ft to 2,500 ft AGL?
yes
Would a special (SPECI) observation be made if the ceiling decreased from 500 ft to 400 ft AGL?
yes
Would a special (SPECI) observation be made if the ceiling increased from 200 ft to 800 ft AGL?
yes
Would a special (SPECI) observation be made if the visibility decreased from 2 1/4 sm to 1 1/2 sm?
yes
Would a special (SPECI) observation be made if the visibility increased from 1/4 sm to 5/8 sm?
yes
Would a special (SPECI) observation be made if the visibility increased from 3/4 sm to 1 1/2 sm?
yes
Would a special (SPECI) observation be made if the visibility increased from 3/4 sm to 1 sm?
yes
What ASOS sensor measures precipitation accumulation?
AWPAG
Most Part 91 weather-related accidents cause what type of injury?
none
