Beechbarron From United States of America, joined May 2000, 134 posts, RR: 0 Posted (12 years 8 months 1 week 1 day 7 hours ago) and read 1338 times:
Hey Gang. I've been spotting here in ATL quite a bit lately. I've noticed that sometimes Delta's 727's get compressor surges on touchdown when the reversers are just engaged. Is this normal? I'll usually here a "bang bang" and sometimes see a flash out of the #2 engines cascade at the same time. What causes this?
B737-112 From United States of America, joined Nov 1999, 885 posts, RR: 6
Reply 1, posted (12 years 8 months 1 week 1 day 2 hours ago) and read 1260 times:
All 727's have this happen (except for the Tay powered UPS models). A quick power adjustment from half-power to idle followed by a quick reverse will sometimes cause this. Also in crosswinds, the engine not getting a good wind (sheltered behind the fuselage) is another perfect situation for a compressor stall. I've heard mechanics say the JT8D can handle a compressor stall with no risk of damage or any problem, it's basically just a cough, a harmless engine surge gasping for air. If a CFM56 powered airplane had this happen, it's time to buy a new engine because its blades would be in a million pieces.