Weather void time if the aircraft has not departed:
1 hour 30 minutes
What are the weather briefing sources
Military forescaster
Operational Weather squadron (OWS)
Flight service station
Current departure weather conditions may be obtained through what sources:
ATIS
Ground control
AWOS or ASOS
Control tower
To determine i non-standard takeoff procedures are applicable to your departure aerodrome:
Refer to the TLA table of contents
look for the T symbol in the pilot briefing section of the IAP chart
Alternate airfield is required if:
An IAP may be selected as an alternate if what following requirements are met?
Weather updates enroute can be obtained where:
EFAS (En route flight advisory service) - Flight watch
PMSV (Pilot to metro service) - Metro
HIWAS (hazardous inflight weather advisory service)
FSS
Weather updates destination can be obtained where:
FSS
ATIS
AWOS
ASOS