Laddie From United States of America, joined Jan 2010, 513 posts, RR: 8 Reply 1, posted (3 years 9 months 3 weeks 1 day 19 hours ago) and read 67350 times:
Next flight of RC501 might be 2/21 as she makes her way to Moses Lake, and then, eventually, Palmdale. We shall miss you here in Everett, RC501! Fare thee well and we'll see you again late this year when the flight testing is done and you are handed over to Cargolux in a delivery ceremony either at PAE or BFI.
WestWing From United States of America, joined Feb 2005, 2124 posts, RR: 7 Reply 3, posted (3 years 9 months 3 weeks 1 day 2 hours ago) and read 66884 times:
It is almost 2:00 PM PST on Sunday Feb-21 and FlightAware doesn't yet show any flight plan today for a B747-8.
(In the previous thread it had been rumored that the second flight of RC501 would be today at noon PST).
The best time to plant a tree is 40 years ago. The second best time is today.
Laddie From United States of America, joined Jan 2010, 513 posts, RR: 8 Reply 5, posted (3 years 9 months 3 weeks 5 hours ago) and read 66534 times:
Quoting Drewski2112 (Reply 5): Looks like flightaware picked up a flight plan for BOE501. ETD is tomorrow, 22 February at 0710.
10:40 AM and RC501 is still on the ground. The main runway at PAE was cleaned by street sweepers this morning in hopes the airplane (and ZA004) will fly today. The latest rumor is that pilots report to the airplane at noon local time.
I know N747EX is the registration/tail # and BOE501 is the flight number, what is RC501? The line number? Has RC been used for all the 747s? Is the 5 used because this is the 5th version, essentially this should have been the 747-500?
pnwtraveler From Canada, joined Jun 2007, 2145 posts, RR: 12 Reply 15, posted (3 years 9 months 2 weeks 6 days 7 hours ago) and read 65029 times:
Quoting WestWing (Reply 13): Quoting Laddie (Reply 12):
might notice some things on the wing's upper surface
Does it look anything like what William Shatner saw on the wing in the Twilight Zone?
I know you probably are privy to internal information which you can't reveal, but your statement was truly mysterious.
Unless he is refering to engineers who have been strapped to the wings, I would imagine it is those "streamers" (not the official term I am sure) they attach to the surface to watch the airflow over the wing.
4holer From United States of America, joined Feb 2002, 2940 posts, RR: 10 Reply 16, posted (3 years 9 months 2 weeks 6 days 7 hours ago) and read 64915 times:
Quoting pnwtraveler (Reply 15): Unless he is refering to engineers who have been strapped to the wings, I would imagine it is those "streamers" (not the official term I am sure) they attach to the surface to watch the airflow over the wing.
Fear not, 4holer. Doing some flow visualization is normal for an airplane with a new wing and flaps. Remember that the 747-8 has single- and double-slotted flaps, and previous 747s had triple-slotted flaps.
747classic From Netherlands, joined Aug 2009, 1935 posts, RR: 13 Reply 20, posted (3 years 9 months 2 weeks 6 days 5 hours ago) and read 64652 times:
Here is some additional info about the actual flight testing, performed by the 3 test aircraft (RC501,521 and 522).
Parts of this reply were already published on an other (closed) thread but are published here again to explane the flight test program of the 747-8.
For the first time in Boeing's commercial flight test experience, the bulk of the program will be based away from Seattle, because the parallel test programs of both the 747-8 and the 787 would interfere too much on one location. The effort is led by Andy Hammer, Boeing 747-8 test program manager, a veteran of previous certification and test programs, including the 747 Large Cargo Freighter (LCF).
Boeing's overall target is to gain FAA and EASA certification in the fourth quarter after a 3,700-hour test program, of which around 1,600 will be flight hours and 2,100 ground test hours. The campaign will be undertaken with three aircraft
We'll undertake flutter and initial airworthiness on the first aircraft (RC501/ N747EX), and it will also be doing the high- and low-speed configuration work," says Hammer. These will be frozen during completion of the initial stability and control phase while RC501 is based out of Moses Lake, a former Strategic Air Command base in eastern Washington used for 747 testing and training since 1969.
Flight testing will then transition south to Palmdale in Southern California's high desert where Boeing aims to take full advantage of the area's clear skies, open ramp space and existing company facilities
The second 747-8F (RC521/N5017Q)) will join the flight test program as soon as RC501's work confirms the high- and low-speed configuration around mid-March. Painted identically to the first aircraft for the test program, RC521's principal task will be proving the General Electric GEnx-2B67 engines and fuel efficiency of the model measured during NAMS (nautical air miles) tests.
The third test aircraft (RC522/ no registration yet) will be rolled out with a production-standard interior, and will be allocated primarily to interior systems tests. Work will be focused on tests of the cargo handling system, environmental control system, smoke detection and halon fire suppression system. Tests will also address additional FAA special conditions concerning protection against cyber-attack, specifically electronic system security protection for the aircraft's control systems as well as for the airline "information domain.
After the FF flight RC501 was in post-flight lay up and inspection. Also Engine no.1 had to be replaced after damage was found at the last stage of the turbine section, after the maiden flight. Boeing and General Electric are looking what the cause is.
Yesterday (22 feb.) the second flight was made, actually a combined test and ferry flight to Moses Lake. Here, at Grant County Airport, the initial airworthiness tests are performed.
tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 81 Reply 21, posted (3 years 9 months 2 weeks 5 days 23 hours ago) and read 64295 times:
Quoting United787 (Reply 14): I know N747EX is the registration/tail # and BOE501 is the flight number, what is RC501? The line number? Has RC been used for all the 747s? Is the 5 used because this is the 5th version, essentially this should have been the 747-500?
RC501 is what's called the "variable" number. Like the serial number, it is unique to each aircraft, but it encodes more information.
R = 747. C = the particular configuration block, and 501 is a sequence number. All RC's would be 747-8F's.
This numbering scheme is consistent across Boeing Puget-Sound heritage models. All 737-classics are P, 737NG's are Y, 767's are V, 777's are W, 787's are Z (that's where "ZA001", etc. come from).