<< >> NASA ASRS Report 517250, July 2001

B727 flight crew exceeds the 250 KTS speed restr below 10000 ft during clearance to 7000 ft southeast or ord, il.

Attributes
ACN	517250
Time
Date	200107
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 8500 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Flight Phase	descent : intermediate altitude descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 160 flight time total : 5000 flight time type : 1900
ASRS Report	517250
Events
Anomaly	non adherence : far non adherence : clearance other anomaly
Resolutory Action	controller : issued advisory flight crew : became reoriented
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Airspace Structure Environmental Factor
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Descending through 10000 ft MSL into ord, first officer was slowly decelerating from 300 KTS assigned to 250 KTS. Contributing factors: 1) ATC had issued multiple speed restrs since getting airborne on 90 min flight. 2) just prior to descent order from 11000 ft to 7000 ft, speed increase to 300 KTS was issued. 3) first officer reports flying previous month out of houston, participating in greater than 250 KTS below 10000 ft test program. Crew discovered and commenced corrective action: immediate correction to at/below 250 KTS and ATC queried as to speed. Human factors: tight ATC-directed speed control, last min speed increase just prior to descent clearance, and recent flying in greater than 250 KTS below 10000 ft MSL possibly contributed to airspeed exceeding 250 KTS. Below 10000 ft MSL.

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Original NASA ASRS Text

Title: B727 FLT CREW EXCEEDS THE 250 KTS SPD RESTR BELOW 10000 FT DURING CLRNC TO 7000 FT SE OR ORD, IL.

Narrative: DSNDING THROUGH 10000 FT MSL INTO ORD, FO WAS SLOWLY DECELERATING FROM 300 KTS ASSIGNED TO 250 KTS. CONTRIBUTING FACTORS: 1) ATC HAD ISSUED MULTIPLE SPD RESTRS SINCE GETTING AIRBORNE ON 90 MIN FLT. 2) JUST PRIOR TO DSCNT ORDER FROM 11000 FT TO 7000 FT, SPD INCREASE TO 300 KTS WAS ISSUED. 3) FO RPTS FLYING PREVIOUS MONTH OUT OF HOUSTON, PARTICIPATING IN GREATER THAN 250 KTS BELOW 10000 FT TEST PROGRAM. CREW DISCOVERED AND COMMENCED CORRECTIVE ACTION: IMMEDIATE CORRECTION TO AT/BELOW 250 KTS AND ATC QUERIED AS TO SPD. HUMAN FACTORS: TIGHT ATC-DIRECTED SPD CTL, LAST MIN SPD INCREASE JUST PRIOR TO DSCNT CLRNC, AND RECENT FLYING IN GREATER THAN 250 KTS BELOW 10000 FT MSL POSSIBLY CONTRIBUTED TO AIRSPEED EXCEEDING 250 KTS. BELOW 10000 FT MSL.

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.