±Recent Visitors

Recent Visitors to Com-Central!

±User Info-big


Welcome Anonymous

Nickname
Password

Membership:
Latest: HighestAce
New Today: 0
New Yesterday: 0
Overall: 6648

People Online:
Members: 0
Visitors: 475
Total: 475
Who Is Where:
 Visitors:
01: Home
02: Photo Gallery
03: Home
04: Community Forums
05: Community Forums
06: Community Forums
07: Photo Gallery
08: Community Forums
09: News Archive
10: Home
11: Home
12: Photo Gallery
13: Home
14: Photo Gallery
15: Downloads
16: Photo Gallery
17: Community Forums
18: Home
19: Community Forums
20: Community Forums
21: Member Screenshots
22: Downloads
23: Community Forums
24: Home
25: Statistics
26: Home
27: Downloads
28: Community Forums
29: Community Forums
30: Photo Gallery
31: Community Forums
32: Community Forums
33: News Archive
34: Tell a Friend
35: Community Forums
36: Home
37: Community Forums
38: Home
39: Downloads
40: Member Screenshots
41: Community Forums
42: Community Forums
43: Downloads
44: Statistics
45: Downloads
46: Photo Gallery
47: Community Forums
48: Downloads
49: Community Forums
50: Downloads
51: Photo Gallery
52: Downloads
53: Photo Gallery
54: Member Screenshots
55: Community Forums
56: Home
57: Photo Gallery
58: Statistics
59: Photo Gallery
60: Your Account
61: Community Forums
62: Community Forums
63: Community Forums
64: Community Forums
65: Community Forums
66: Community Forums
67: Community Forums
68: Community Forums
69: Community Forums
70: Downloads
71: Community Forums
72: Community Forums
73: Community Forums
74: Home
75: Member Screenshots
76: Home
77: Home
78: Member Screenshots
79: Community Forums
80: Community Forums
81: Photo Gallery
82: Community Forums
83: Photo Gallery
84: Statistics
85: Member Screenshots
86: Downloads
87: Community Forums
88: Community Forums
89: Your Account
90: Community Forums
91: Home
92: Home
93: Community Forums
94: Community Forums
95: Community Forums
96: Community Forums
97: Member Screenshots
98: Community Forums
99: Member Screenshots
100: Member Screenshots
101: Community Forums
102: Home
103: Community Forums
104: Member Screenshots
105: Community Forums
106: Home
107: News Archive
108: Community Forums
109: Community Forums
110: Photo Gallery
111: Community Forums
112: Home
113: Community Forums
114: Community Forums
115: Member Screenshots
116: Community Forums
117: Community Forums
118: Home
119: Photo Gallery
120: Community Forums
121: Community Forums
122: Your Account
123: Photo Gallery
124: Home
125: Photo Gallery
126: Photo Gallery
127: Photo Gallery
128: Photo Gallery
129: Community Forums
130: Photo Gallery
131: Home
132: Community Forums
133: Home
134: Community Forums
135: Community Forums
136: Community Forums
137: Community Forums
138: Community Forums
139: Member Screenshots
140: Member Screenshots
141: Home
142: Photo Gallery
143: Community Forums
144: Home
145: Photo Gallery
146: Community Forums
147: Community Forums
148: Community Forums
149: Community Forums
150: Home
151: Photo Gallery
152: Home
153: Community Forums
154: Photo Gallery
155: Community Forums
156: Photo Gallery
157: Photo Gallery
158: Community Forums
159: Community Forums
160: Community Forums
161: Member Screenshots
162: Community Forums
163: Community Forums
164: Community Forums
165: Home
166: Photo Gallery
167: Community Forums
168: Home
169: Community Forums
170: Community Forums
171: Downloads
172: Community Forums
173: Member Screenshots
174: News Archive
175: Member Screenshots
176: Community Forums
177: Community Forums
178: Community Forums
179: Community Forums
180: Downloads
181: Member Screenshots
182: Community Forums
183: Photo Gallery
184: Photo Gallery
185: Community Forums
186: Community Forums
187: Community Forums
188: Community Forums
189: Community Forums
190: Community Forums
191: Home
192: Community Forums
193: Community Forums
194: Downloads
195: Home
196: Community Forums
197: Photo Gallery
198: Member Screenshots
199: Community Forums
200: Home
201: Community Forums
202: Home
203: Community Forums
204: Community Forums
205: Photo Gallery
206: Community Forums
207: Community Forums
208: Community Forums
209: Community Forums
210: Photo Gallery
211: Community Forums
212: Home
213: Member Screenshots
214: Community Forums
215: Home
216: Community Forums
217: Home
218: Home
219: Community Forums
220: Downloads
221: Photo Gallery
222: Community Forums
223: Community Forums
224: Home
225: Downloads
226: Home
227: News Archive
228: Community Forums
229: Home
230: Photo Gallery
231: Community Forums
232: Community Forums
233: Photo Gallery
234: Home
235: Community Forums
236: Photo Gallery
237: Member Screenshots
238: Home
239: Community Forums
240: Home
241: Member Screenshots
242: Photo Gallery
243: Photo Gallery
244: Downloads
245: Community Forums
246: Community Forums
247: Community Forums
248: Home
249: Community Forums
250: Community Forums
251: Community Forums
252: Community Forums
253: Community Forums
254: Home
255: Photo Gallery
256: Photo Gallery
257: Community Forums
258: Member Screenshots
259: Member Screenshots
260: Member Screenshots
261: Photo Gallery
262: Community Forums
263: Community Forums
264: Community Forums
265: Community Forums
266: Member Screenshots
267: Community Forums
268: Downloads
269: Community Forums
270: Community Forums
271: Photo Gallery
272: Home
273: Photo Gallery
274: Photo Gallery
275: Community Forums
276: Community Forums
277: Community Forums
278: Home
279: Community Forums
280: Community Forums
281: Community Forums
282: Photo Gallery
283: Community Forums
284: Community Forums
285: Home
286: Photo Gallery
287: Photo Gallery
288: Member Screenshots
289: Community Forums
290: Community Forums
291: News Archive
292: Community Forums
293: Photo Gallery
294: Community Forums
295: Photo Gallery
296: Photo Gallery
297: Photo Gallery
298: Community Forums
299: Community Forums
300: Community Forums
301: Downloads
302: Community Forums
303: Downloads
304: Home
305: Home
306: Photo Gallery
307: Photo Gallery
308: Community Forums
309: News Archive
310: Community Forums
311: Community Forums
312: Home
313: Your Account
314: Community Forums
315: Community Forums
316: Photo Gallery
317: Photo Gallery
318: Community Forums
319: Photo Gallery
320: Community Forums
321: Community Forums
322: Your Account
323: Community Forums
324: Photo Gallery
325: Member Screenshots
326: Community Forums
327: Downloads
328: Community Forums
329: Home
330: Photo Gallery
331: Member Screenshots
332: Photo Gallery
333: Community Forums
334: Community Forums
335: Community Forums
336: Home
337: Community Forums
338: Community Forums
339: Photo Gallery
340: Home
341: Community Forums
342: Photo Gallery
343: Photo Gallery
344: Community Forums
345: Community Forums
346: Community Forums
347: Photo Gallery
348: Community Forums
349: Member Screenshots
350: Community Forums
351: Member Screenshots
352: Community Forums
353: Photo Gallery
354: Community Forums
355: Photo Gallery
356: Community Forums
357: Home
358: Home
359: Community Forums
360: Home
361: Member Screenshots
362: Photo Gallery
363: Home
364: Community Forums
365: Photo Gallery
366: News Archive
367: Photo Gallery
368: Community Forums
369: Member Screenshots
370: Photo Gallery
371: Community Forums
372: Photo Gallery
373: Community Forums
374: Member Screenshots
375: Member Screenshots
376: Home
377: Home
378: Member Screenshots
379: Downloads
380: Photo Gallery
381: Community Forums
382: Community Forums
383: Community Forums
384: Community Forums
385: Home
386: Community Forums
387: Member Screenshots
388: Photo Gallery
389: Community Forums
390: Community Forums
391: Community Forums
392: Community Forums
393: Member Screenshots
394: News Archive
395: Downloads
396: Community Forums
397: Home
398: Home
399: Community Forums
400: Community Forums
401: News
402: Community Forums
403: Community Forums
404: Community Forums
405: Community Forums
406: Photo Gallery
407: Member Screenshots
408: Downloads
409: Photo Gallery
410: Community Forums
411: Photo Gallery
412: Photo Gallery
413: Downloads
414: Home
415: Member Screenshots
416: Community Forums
417: Home
418: Photo Gallery
419: Community Forums
420: Community Forums
421: Community Forums
422: Home
423: Photo Gallery
424: Downloads
425: Photo Gallery
426: Home
427: Community Forums
428: Home
429: Home
430: Home
431: Photo Gallery
432: Community Forums
433: Home
434: News Archive
435: Community Forums
436: Community Forums
437: Downloads
438: Photo Gallery
439: Photo Gallery
440: Home
441: Photo Gallery
442: Community Forums
443: Community Forums
444: Community Forums
445: Community Forums
446: Community Forums
447: Community Forums
448: Community Forums
449: Downloads
450: Home
451: Community Forums
452: Downloads
453: Downloads
454: Community Forums
455: Community Forums
456: Home
457: Home
458: Home
459: Photo Gallery
460: Community Forums
461: Home
462: Downloads
463: Downloads
464: Photo Gallery
465: Photo Gallery
466: Member Screenshots
467: Photo Gallery
468: Community Forums
469: Community Forums
470: Community Forums
471: Home
472: Downloads
473: Community Forums
474: Home
475: Community Forums

Staff Online:

No staff members are online!
B777 "warning" for long non-stop flights (W/Rolls Engines) :: Archived
A general meeting place for all pilots!
Post new topic    Revive this topic    Printer Friendly Page     Forum Index ›  Officer's Club

Topic Archived View previous topic :: View next topic  
Author Message
HF_SlowHand
Power User

Offline Offline
Joined: Aug 27, 2005
Posts: 767
Location: Meeechigan
PostPosted: Wed Mar 18, 2009 10:38 am
Post subject: B777 "warning" for long non-stop flights (W/Rolls Engines)

From "SOAR" (Capt Tom Bunn)

777 Advisory

This applies only to 777-200 and 777-300 with Rolls-Royce engines on extremely long flights.

You may remember the accident at London's Heathrow airport a few months ago when a BA 777-200 landed just short of the runway due to partial loss of engine power.

It has been determined that the partial loss of power was due to clogging of a device (fuel/oil heat exchanger) through which fuel flows to the engines. There are always some water molecules suspended in the jet fuel. Ordinarily, this does not cause any trouble at all. But on the extremely long flights the 777-200 can make, exposure to very cold temperatures - particularly on flights near the North Pole - can cool the fuel enough so that particles of ice form and collect in the device in the fuel lines. After the ice forms, changes in engine power can cause the ice to be dislodged. The dislodged ice may then move to the unit that controls engine power.

Procedures have been adopted which may take care of the problem. However, the National Transport Safety Board (NTSB) is not satisfied with procedures alone, as reported at this link.



The NTSB wants a fix of the problem. However, it is expected that it will take eighteen months to redesign and replace the questionable units. The National Transport Safety Board has stated: " . . . until the current fuel/oil heat exchangers are replaced by heat exchangers more tolerant to ice accretion, additional failures to achieve commanded thrust could occur and could result in a serious accident and, possibly, injuries and deaths."

The NTSB did not specifically say that long flights on the 777 should not be done until the situation is corrected. But, I think they are saying as close to that as they can without upsetting politics between the U.S. and Great Britain.

What I suggest is the following: if you are planning an extremely long trip for which a fifteen to eighteen-hour non-stop flight is offered, don't take the non-stop flight. Instead, break the trip up into flights of a more conventional duration.

BA, Singapore Airlines, American Airlines and Delta Airlines operate 777s with Rolls -Royce engines.

_________________
I deny everything
I lie about everything
And everything I deny
Is a lie!
Back to top
View user's profile Send e-mail Visit poster's website
Shades
Forum Tree-Rat

Offline Offline
Joined: Mar 07, 2005
Posts: 6478
Location: 3rd Branch up, 'Ye Olde Oak', Green Wood.
PostPosted: Wed Mar 18, 2009 6:11 pm
Post subject: Re: B777 "warning" for long non-stop flights (W/Rolls Engines)

Hey!
Some people can't wait to get off the flight.
This has been a sensible travel option provided to you by us, considerate and forward-thinking, Europeans!

_________________
Skwerl's place.

Com-Central's cutest, fluffiest, twitchiest, tail.
CPU > Intel i9-9900k (o/c 4.9GHz); COOLING > BeQuiet! Dark Rock Pro 4;
MOBO > ASUS PRIME Z390-A; RAM > 2x32GB Corsair LPX 2666MHz;
GPU > Gigabyte GEFORCE GTX650Ti PCI-e 3.0 2Gb GDDR5;
AUDIO > Creative X-Fi Xtreme Music (plus - Universal Audio UAD2 Quad Custom accelerator);
HDD > 3x1TB+ M.2. SSDs; LCD > DELL - S2419HGF (1920x1080);
PSU > 650W be quiet Straight Power 11 - 80+ Gold;
CASE > BeQuiet! SILENT BASE 601; OS > Windows 11 Home Advanced (64-bit).
Back to top
View user's profile Visit poster's website ICQ Number
Display posts from previous:   
Post new topic    Revive this topic    Printer Friendly Page    Forum Index ›  Officer's Club
Page 1 of 1
All times are GMT - 6 Hours

Archive Revive
Username:
This is an archived topic - your reply will not be appended here.
Instead, a new topic will be generated in the active forum.
The new topic will provide a reference link to this archived topic.