Jhooper From United States of America, joined Dec 2001, 6206 posts, RR: 11 Posted (12 years 4 months 2 weeks 4 days 9 hours ago) and read 2227 times:
Of course, this probably depends on the model of altimeter we're talking about here, but above what altitude are most barometric altimeters no longer reliable. I was assume this is above the service cieling of most commercial airliners. But, for example, what altitude would the Space Shuttle's altimeter read in orbit, and what altitude does it cease giving reliable information?
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Shaun3000 From United States of America, joined Mar 2002, 445 posts, RR: 0
Reply 1, posted (12 years 4 months 2 weeks 4 days 7 hours ago) and read 2214 times:
Altimeters are rated to a certain altitude. FOr example, in one of the small planes i fly, the altimer is rated to, I believe, 20,000'. The rated altitude is uaully on the face of the altimeter. Above that altitude it will no longer give accurate readings. It may be close, but not within the mandated FAA limits.
It varies for all altimeters. There isn't one standard altitude. It jsut depends on the model.
Dc10hound From United States of America, joined Dec 2000, 463 posts, RR: 5
Reply 3, posted (12 years 4 months 2 weeks 3 days 18 hours ago) and read 2201 times:
During a air data static system leak check, the A300 AMM tells you not to exceed limits of 1050mb and 115 mb.
We were performing air data system check one day, and got distracted by other events on the flight deck. Next thing we knew, the Captain's altimeter had rolled up to and stuck at 50,000 feet. It would rise no further.
As a precaution, we changed the altimeter and ADC1 for service "above" and beyond the call of duty....
"Eagles soar. But weasels never get sucked into jet intakes.."