<< >> NASA ASRS Report 367564, May 1997

A B747 captain reports overhearing other flcs complaining of wake turbulence while flying in mnps airspace on the north atlantic rtes. The complaints seem to have come from B757 and B767 flcs primarily.

Attributes
ACN	367564
Time
Date	199705
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zzz
State Reference	US
Aircraft 1
Controlling Facilities	artcc : zzz
Operator	common carrier : air carrier
Make Model Name	B747 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : atlantic
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 14000 flight time type : 4700
ASRS Report	367564
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	inflight encounter other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Regarding your request for wake turbulence reports, I have heard a lot of complaints of air-to-air (131.8) in mnps airspace when there is little or no wind, since they went to 1000 ft separation. Since this is a new program, you may want to pay particular attention to this situation. Callback conversation with reporter revealed the following information: a B747 captain reports that he has overheard B757 and B767 flcs complaining of wake turbulence from other aircraft while in mnps airspace over the north atlantic. He said that most of the complaints occurred on a day with light winds and primarily between B757 and B767 aircraft with one of the complainants, apparently, remarking on the potential for wake problems once B747's join the mnps program (the reporter's company is presently certifying their B747S for mnps).

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Original NASA ASRS Text

Title: A B747 CAPT RPTS OVERHEARING OTHER FLCS COMPLAINING OF WAKE TURB WHILE FLYING IN MNPS AIRSPACE ON THE NORTH ATLANTIC RTES. THE COMPLAINTS SEEM TO HAVE COME FROM B757 AND B767 FLCS PRIMARILY.

Narrative: REGARDING YOUR REQUEST FOR WAKE TURB RPTS, I HAVE HEARD A LOT OF COMPLAINTS OF AIR-TO-AIR (131.8) IN MNPS AIRSPACE WHEN THERE IS LITTLE OR NO WIND, SINCE THEY WENT TO 1000 FT SEPARATION. SINCE THIS IS A NEW PROGRAM, YOU MAY WANT TO PAY PARTICULAR ATTN TO THIS SIT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: A B747 CAPT RPTS THAT HE HAS OVERHEARD B757 AND B767 FLCS COMPLAINING OF WAKE TURB FROM OTHER ACFT WHILE IN MNPS AIRSPACE OVER THE NORTH ATLANTIC. HE SAID THAT MOST OF THE COMPLAINTS OCCURRED ON A DAY WITH LIGHT WINDS AND PRIMARILY BTWN B757 AND B767 ACFT WITH ONE OF THE COMPLAINANTS, APPARENTLY, REMARKING ON THE POTENTIAL FOR WAKE PROBS ONCE B747'S JOIN THE MNPS PROGRAM (THE RPTR'S COMPANY IS PRESENTLY CERTIFYING THEIR B747S FOR MNPS).

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.