Cumulus From United Kingdom, joined Aug 2006, 1402 posts, RR: 1 Posted (7 years 9 months 2 weeks 19 hours ago) and read 9367 times:
Been visiting FL350 and stumbled across this video of a PIA 747 which goes around at Manchester. ATC ask (about 6 times) what the reason is the go around, and the reply being "unsafe landing gear light". Why so late on the approach, are these checks not complete a lot further from t/d?
Cubastar From United States of America, joined Nov 2006, 424 posts, RR: 5
Reply 2, posted (7 years 9 months 2 weeks 14 hours ago) and read 8913 times:
Quoting Cumulus (Thread starter): Why so late on the approach, are these checks not complete a lot further from t/d?
On most approaches, the landing gear is not lowered until near or over the final approach fix inbound (usually the outer marker). At that time the final landing checklist is run. You would not get an unsafe gear light normally until the gear is lowered.
G4LASRamper From United States of America, joined Dec 2006, 171 posts, RR: 0
Reply 3, posted (7 years 9 months 2 weeks 4 hours ago) and read 8635 times:
Actually, you can get an unsafe gear or door indication at any time if things like proximity targets or sensors get knocked out of alignment. Even after the gear is verified as down and locked, it is possible to get unlock indications, again due to things like failure of sensors or switches in the gear system.
A go-around or overshoot would be prudent in such a case. Alternate means of lowering the gear and verifying lock could then be used.
"A pig that doesn't fly is just a pig." - Porco Rosso