Flight crew overshoots altitude 300 ft. Responds to TCASII.

Attributes
ACN	309401
Time
Date	199507
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : iiu
State Reference	KY
Altitude	msl bound lower : 27000 msl bound upper : 27300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 240 flight time total : 18400 flight time type : 5400
ASRS Report	309401
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 220 flight time total : 12000 flight time type : 2300
ASRS Report	309754
Events
Anomaly	altitude deviation : overshoot altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : regained aircraft control flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While climbing on autoplt 10 NM north of iiu, I engaged level off mode at FL270. Climb rate was approximately 800-1000 FPM. Autoplt overshot altitude by 200-250 ft. At this time we got a TCASII 'RA' from a sbound dc-9 at FL280 (2 O'clock and approximately 5-6 NM). I complied with TCASII 'RA' and leveled off at FL270. The last min engaging of level off mode at this climb rate was the most significant contributing factor. Supplemental information from acn 309754: the other aircraft acquired a RA and started his climb to avoid conflict. The other aircraft climbed to FL290 before the RA ended.

Original NASA ASRS Text

Title: FLC OVERSHOOTS ALT 300 FT. RESPONDS TO TCASII.

Narrative: WHILE CLBING ON AUTOPLT 10 NM N OF IIU, I ENGAGED LEVEL OFF MODE AT FL270. CLB RATE WAS APPROX 800-1000 FPM. AUTOPLT OVERSHOT ALT BY 200-250 FT. AT THIS TIME WE GOT A TCASII 'RA' FROM A SBOUND DC-9 AT FL280 (2 O'CLOCK AND APPROX 5-6 NM). I COMPLIED WITH TCASII 'RA' AND LEVELED OFF AT FL270. THE LAST MIN ENGAGING OF LEVEL OFF MODE AT THIS CLB RATE WAS THE MOST SIGNIFICANT CONTRIBUTING FACTOR. SUPPLEMENTAL INFO FROM ACN 309754: THE OTHER ACFT ACQUIRED A RA AND STARTED HIS CLB TO AVOID CONFLICT. THE OTHER ACFT CLBED TO FL290 BEFORE THE RA ENDED.

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.