LMP737 From , joined Dec 1969, posts, RR: Reply 1, posted (9 years 3 months 1 day 13 hours ago) and read 4287 times:
Cascade reversers are located on both the inboard and outboard sides of the engine. My guess is that the reverser was manually opened because of some maintenance issue. It's also possible that due to the angle of the photograph it only appears that the outboard reverser is the only one open.
Dl757md From United States of America, joined May 2004, 1560 posts, RR: 18 Reply 5, posted (9 years 3 months 1 day 13 hours ago) and read 4255 times:
I believe the reverser on the Thai 747-4 must have been manually opened as mentioned by LMP737 because the photo clearly shows that only the outboard side of the cowling is moved aft ... IMO.
I agree the photo does clearly show that the inboard reverser half is stowed while the outboard half is deployed.
However the photographer states that the aircraft is parking, indicating that it was or had been taxiing in this configuration. Mx would never taxi an airplane in this configuration. IMO there was a failure of the outboard reverser half to stow after landing. There was probably a right reverser stow signal EICAS message letting the crew know that the reverser had not properly stowed.
Manburkert From China, joined Sep 2004, 19 posts, RR: 0 Reply 6, posted (9 years 3 months 1 day 2 hours ago) and read 4188 times:
I believe the plane is on a engine testrun after maintenance. Have seen this at our airport when they doing testrun after maintenance. The thrustreverser on a 747 was deployed one by one.
From that viewpoint its nothing special. But during normal operation I don't think its healthy.