Wake encounter -- altitude deviation altitude overshot. This air carrier encounters the wake of a pr...

Attributes
ACN	306533
Time
Date	199505
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	msl bound lower : 2500 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Jetstream 41
Operating Under FAR Part	Part 135
Flight Phase	climbout : initial climbout : intermediate altitude
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Aircraft 2
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 240 flight time total : 4200 flight time type : 500
ASRS Report	306533
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot inflight encounter other non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

For takeoff at ewr we were given the newark 4 departure (climb on 195 degree heading till 3 DME, then right turn to 220 degree up to 5000 ft) for runway 22R. We had been given 2500 ft verses 5000 ft. We departed behind an air carrier B727 and at approximately 1000 ft MSL we encountered wake turbulence. We rolled right, and I, the PF, countered the turbulence. I heard '1000 ft to go' at 1500 ft MSL. We were given a further right turn to 310 degrees, and to the best of my knowledge we encountered a less severe version of wake turbulence. I heard the captain call 2500 ft and saw we were at 2900 ft, climbing. I slowed the ascent and heard the controller ask for assigned altitude, the captain responded '2500 ft.' to the best of my knowledge we had gotten back to 2500 ft and were given a climb to 5000 ft. I never heard '500 to go' a standard callout. I admit I was extremely concerned with the wake turbulence, and for a second thought we were doing the normal newark 4 departure (up to 5000 ft). We (captain helped) immediately corrected and explained the circumstances to the controller. Callback conversation with reporter revealed the following information: the reporter was an first officer on a jetstream 4100 and was flying newark 4 SID behind a B727. The B727 had departed runway 22R about 2 mins before the jetstream. Shortly after takeoff the reporter encountered the B727's wake and the effect became more intense until at about 1500 ft he experienced a rapid roll to the right of about 30 degrees. Thereafter, he experienced several other rolling moments that were less severe and during all of this he forgot to leveloff. The first officer overshot the assigned altitude by 400 ft and both he and the captain pushed over and descended to 2500 ft. They were cleared to 5000 ft shortly after returning to their proper altitude. Since this report the first officer has experienced 3 other wake encounters and he now spaces himself carefully behind large aircraft. He said that he will send reports of any future wake encounters.

Original NASA ASRS Text

Title: WAKE ENCOUNTER -- ALTDEV ALT OVERSHOT. THIS ACR ENCOUNTERS THE WAKE OF A PRECEDING ACR AND WHILE INVOLVED IN RECOVERY AND AVOIDANCE MANEUVERS THE FLC OVERSHOOTS THE ASSIGNED ALT.

Narrative: FOR TKOF AT EWR WE WERE GIVEN THE NEWARK 4 DEP (CLB ON 195 DEG HDG TILL 3 DME, THEN R TURN TO 220 DEG UP TO 5000 FT) FOR RWY 22R. WE HAD BEEN GIVEN 2500 FT VERSES 5000 FT. WE DEPARTED BEHIND AN ACR B727 AND AT APPROX 1000 FT MSL WE ENCOUNTERED WAKE TURB. WE ROLLED R, AND I, THE PF, COUNTERED THE TURB. I HEARD '1000 FT TO GO' AT 1500 FT MSL. WE WERE GIVEN A FURTHER R TURN TO 310 DEGS, AND TO THE BEST OF MY KNOWLEDGE WE ENCOUNTERED A LESS SEVERE VERSION OF WAKE TURB. I HEARD THE CAPT CALL 2500 FT AND SAW WE WERE AT 2900 FT, CLBING. I SLOWED THE ASCENT AND HEARD THE CTLR ASK FOR ASSIGNED ALT, THE CAPT RESPONDED '2500 FT.' TO THE BEST OF MY KNOWLEDGE WE HAD GOTTEN BACK TO 2500 FT AND WERE GIVEN A CLB TO 5000 FT. I NEVER HEARD '500 TO GO' A STANDARD CALLOUT. I ADMIT I WAS EXTREMELY CONCERNED WITH THE WAKE TURB, AND FOR A SECOND THOUGHT WE WERE DOING THE NORMAL NEWARK 4 DEP (UP TO 5000 FT). WE (CAPT HELPED) IMMEDIATELY CORRECTED AND EXPLAINED THE CIRCUMSTANCES TO THE CTLR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR WAS AN FO ON A JETSTREAM 4100 AND WAS FLYING NEWARK 4 SID BEHIND A B727. THE B727 HAD DEPARTED RWY 22R ABOUT 2 MINS BEFORE THE JETSTREAM. SHORTLY AFTER TKOF THE RPTR ENCOUNTERED THE B727'S WAKE AND THE EFFECT BECAME MORE INTENSE UNTIL AT ABOUT 1500 FT HE EXPERIENCED A RAPID ROLL TO THE R OF ABOUT 30 DEGS. THEREAFTER, HE EXPERIENCED SEVERAL OTHER ROLLING MOMENTS THAT WERE LESS SEVERE AND DURING ALL OF THIS HE FORGOT TO LEVELOFF. THE FO OVERSHOT THE ASSIGNED ALT BY 400 FT AND BOTH HE AND THE CAPT PUSHED OVER AND DSNDED TO 2500 FT. THEY WERE CLRED TO 5000 FT SHORTLY AFTER RETURNING TO THEIR PROPER ALT. SINCE THIS RPT THE FO HAS EXPERIENCED 3 OTHER WAKE ENCOUNTERS AND HE NOW SPACES HIMSELF CAREFULLY BEHIND LARGE ACFT. HE SAID THAT HE WILL SEND RPTS OF ANY FUTURE WAKE ENCOUNTERS.

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.

Wake encounter -- altitude deviation altitude overshot. This air carrier encounters the wake of a preceding air carrier and while involved in recovery and avoidance maneuvers the flight crew overshoots the assigned altitude.