Words of Advice:

"Never Feel Sorry For Anyone Who Owns an Airplane."-- Tina Marie

If Something Seems To Be Too Good To Be True, It's Best To Shoot It, Just In Case." -- Fiona Glenanne

Flying the Airplane is More Important than Radioing Your Plight to a Person on the Ground
Who is Incapable of Understanding or Doing Anything About It.
" -- Unknown

"There seems to be almost no problem that Congress cannot, by diligent efforts and careful legislative drafting, make ten times worse." -- Me

"What the hell is an `Aluminum Falcon'?" -- Emperor Palpatine

"Eck!" -- George the Cat

Sunday, February 11, 2018

Your Sunday Morning Jet Noise

A DC-8:

This one almost went horribly wrong.


Old NFO said...

Yep, good old J75s on it! Funny thing is, those same engines were used on Ashville class PGs!

CenterPuke88 said...

That close call is scary. I used the field elevation and the metar to calculate a density altitude of 9188 ft. The only comparable performance data I could find was for NASA’s DC-8-72 (same CFM-56’s), and they required between 2,300 meters and 3000 meters, depending upon takeoff weight. That was on a standard day at sea level, there was no correction data.

The field used had 3,500 meters plus a 200 meter overrun, but also has terrain rising above 30 meters at 1,500 meters from the runway end of Rwy 01. The -70 is also limited to a 9 degree initial pitch to avoid a tail strike. Assuming a perfect rotation and climb at runway end, that puts the flight path about 70 meters over terrain, but they looked quite a bit closer. Oh, did I forget to mention, the final 2,000 meters of Rwy 01 has a 0.78% upslope...

The Colombian investigation revealed the Captain “self dispatched”, rather than using the approved dispatchers at the airport, and the airline was banned from operations in Colombia.