Quote:
Originally Posted by Capt Spaulding
We get on board, belt up – Big wigs get on and belt up – flight crew pre-flights, gets on board and belts up. They run through the cockpit checks and start the start sequence.
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Thanks for posting that. Great read.
You can't calculate exact density altitude without knowing what the barometric pressure is, but given what you said, I think you nailed it with that assessment there.
The standard temperature at 7,000ft is 34F. The rule of thumb is to add 120ft for each degree above standard temperature. So, the approximate density altitude for that day was 7000+((100-34)*120) or 14,920ft.
Basically, on that day at that airport a Cessna 172 with a 14,000ft service ceiling would have never made it off the runway.