B767-400 flight crew has an altitude and heading deviation during climb.

Attributes
ACN	721099
Time
Date	200612
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : zjx.artcc
State Reference	FL
Altitude	msl single value : 19000
Environment
Flight Conditions	IMC
Weather Elements	Turbulence
Light	Night
Aircraft 1
Controlling Facilities	artcc : zjx.artcc
Operator	common carrier : air carrier
Make Model Name	B767-400 and 400 ER
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : initial
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 7000 flight time type : 600
ASRS Report	721099
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 190 flight time total : 17000 flight time type : 1400
ASRS Report	721250
Events
Anomaly	altitude deviation : overshoot inflight encounter : turbulence non adherence : clearance other spatial deviation
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft Weather
Primary Problem	Flight Crew Human Performance

Narrative:

We were given clearance to climb to FL190 and heading 340 degrees. Climbing through 17500 ft at approximately 320 KTS. We began to experience moderate to severe turbulence. To alleviate the effects of the turbulence; a speed of 250 KTS was selected on the autoplt MCP. The autoplt raised the nose to decelerate and caused a very high climb rate. As we passed approximately FL185 the autoplt went into the 'altitude capture' mode and we experienced severe type turbulence with a tremendous updraft. The high climb rate and updraft caused the autoplt to be unable to capture the assigned altitude of FL190. Once I recognized the autoplt was not going to capture FL190; I disconnected the autoplt and manually attempted the leveloff. It took a tremendous amount of forward stick force to stop the climb and was very difficult to counter the updraft. The aircraft climbed approximately 600 ft above FL190 before I could counter the updraft and climb rate. At first; it felt like my control inputs had no effect. Once I felt the controls were effective; I returned to the assigned altitude of FL190. The whole event was resolved in approximately 10 seconds. Due to the struggle with the turbulence and altitude our turn to heading 340 degrees was delayed. We first needed to just get control of the airplane. The controller queried our altitude and heading at which time we were at FL190-FL191 on heading 360 degrees. He then gave a vector to 330 degrees with no further comment.

Original NASA ASRS Text

Title: B767-400 FLT CREW HAS AN ALT AND HDG DEV DURING CLB.

Narrative: WE WERE GIVEN CLRNC TO CLB TO FL190 AND HDG 340 DEGS. CLBING THROUGH 17500 FT AT APPROX 320 KTS. WE BEGAN TO EXPERIENCE MODERATE TO SEVERE TURB. TO ALLEVIATE THE EFFECTS OF THE TURB; A SPD OF 250 KTS WAS SELECTED ON THE AUTOPLT MCP. THE AUTOPLT RAISED THE NOSE TO DECELERATE AND CAUSED A VERY HIGH CLB RATE. AS WE PASSED APPROX FL185 THE AUTOPLT WENT INTO THE 'ALT CAPTURE' MODE AND WE EXPERIENCED SEVERE TYPE TURB WITH A TREMENDOUS UPDRAFT. THE HIGH CLB RATE AND UPDRAFT CAUSED THE AUTOPLT TO BE UNABLE TO CAPTURE THE ASSIGNED ALT OF FL190. ONCE I RECOGNIZED THE AUTOPLT WAS NOT GOING TO CAPTURE FL190; I DISCONNECTED THE AUTOPLT AND MANUALLY ATTEMPTED THE LEVELOFF. IT TOOK A TREMENDOUS AMOUNT OF FORWARD STICK FORCE TO STOP THE CLB AND WAS VERY DIFFICULT TO COUNTER THE UPDRAFT. THE ACFT CLBED APPROX 600 FT ABOVE FL190 BEFORE I COULD COUNTER THE UPDRAFT AND CLB RATE. AT FIRST; IT FELT LIKE MY CTL INPUTS HAD NO EFFECT. ONCE I FELT THE CTLS WERE EFFECTIVE; I RETURNED TO THE ASSIGNED ALT OF FL190. THE WHOLE EVENT WAS RESOLVED IN APPROX 10 SECONDS. DUE TO THE STRUGGLE WITH THE TURB AND ALT OUR TURN TO HDG 340 DEGS WAS DELAYED. WE FIRST NEEDED TO JUST GET CTL OF THE AIRPLANE. THE CTLR QUERIED OUR ALT AND HDG AT WHICH TIME WE WERE AT FL190-FL191 ON HDG 360 DEGS. HE THEN GAVE A VECTOR TO 330 DEGS WITH NO FURTHER COMMENT.

Data retrieved from NASA's ASRS site as of January 2009 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.