Cpr twin PIC allows his aircraft to perform an altitude excursion during a bumpy ride to jfk. Autoplt was not being used during this night flight. Reporter cites a lack of cockpit coordination.

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Attributes
ACN	383890
Time
Date	199710
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mmu
State Reference	NJ
Altitude	msl bound lower : 5000 msl bound upper : 5400
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : n90
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other cruise other
Route In Use	departure other departure sid : sid enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument
Experience	controller military : 26 controller non radar : 1 controller radar : 29 controller supervisory : 20 flight time last 90 days : 120 flight time total : 14000 flight time type : 700
ASRS Report	383890
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter other non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : became reoriented flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft departed mmu on IFR flight plan for jfk on published SID. Was under ATC control, radar vectors and instructed to level off at 5000 ft MSL. We were busy complying with ATC instructions and in constant moderate turbulence. Aircraft was being flown manually, altitude preselect was in use. I noticed that during a turn that we were climbing through 5000 ft (altitude assigned) and was attempting to recover approximately 350- 400 ft altitude excursion. ATC questioned altitude assigned (5000 ft). Recovery was made to assigned altitude utilizing normal techniques and considering passenger comfort, under VMC conditions. Aircraft was returned to assigned altitude, under VMC conditions with no conflicts and without further incident or concern by ATC. I stressed the crew resource management and situational awareness with the sic. Departure is the busiest time of flight and requires complete diligence by all crew.

Original NASA ASRS Text

Title: CPR TWIN PIC ALLOWS HIS ACFT TO PERFORM AN ALT EXCURSION DURING A BUMPY RIDE TO JFK. AUTOPLT WAS NOT BEING USED DURING THIS NIGHT FLT. RPTR CITES A LACK OF COCKPIT COORD.

Narrative: ACFT DEPARTED MMU ON IFR FLT PLAN FOR JFK ON PUBLISHED SID. WAS UNDER ATC CTL, RADAR VECTORS AND INSTRUCTED TO LEVEL OFF AT 5000 FT MSL. WE WERE BUSY COMPLYING WITH ATC INSTRUCTIONS AND IN CONSTANT MODERATE TURB. ACFT WAS BEING FLOWN MANUALLY, ALT PRESELECT WAS IN USE. I NOTICED THAT DURING A TURN THAT WE WERE CLBING THROUGH 5000 FT (ALT ASSIGNED) AND WAS ATTEMPTING TO RECOVER APPROX 350- 400 FT ALT EXCURSION. ATC QUESTIONED ALT ASSIGNED (5000 FT). RECOVERY WAS MADE TO ASSIGNED ALT UTILIZING NORMAL TECHNIQUES AND CONSIDERING PAX COMFORT, UNDER VMC CONDITIONS. ACFT WAS RETURNED TO ASSIGNED ALT, UNDER VMC CONDITIONS WITH NO CONFLICTS AND WITHOUT FURTHER INCIDENT OR CONCERN BY ATC. I STRESSED THE CREW RESOURCE MGMNT AND SITUATIONAL AWARENESS WITH THE SIC. DEP IS THE BUSIEST TIME OF FLT AND REQUIRES COMPLETE DILIGENCE BY ALL CREW.

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.