Aviation Safety Reporting System (ASRS) Brief Report(s)

Header Region

ASRS REPORT: 80233

Data Source AVIATION SAFETY REPORTING SYSTEM
Report Number 80233
Local Date 01-JAN-88
Local Time 1801-2400

Synopsis
ACR LGT GROSS ATL DEVIATION UNDERSHOT DURING DESCENT.

Assessment
Event Primary Problem HUMAN FACTORS
ATC Event Results ISSUED NEW CLEARANCE

Anomaly Information
Acft Equip Anomaly Desc LESS SEVERE
Alt Deviation Anomaly Desc UNDERSHOOT
Anomaly Detected - Person Desc AIR TRAFFIC CONTROL

Location Information
Loc State Code MO
Loc Ref ATC Name FTZ
Reference ID Distance (nm) 20
Altitude MSL - Single Value(ft) 10000

Environmental Information
Weather Conditions VMC
Light Condition NIGHT


AIRCRAFT INFORMATION

Aircraft 1
Acft Make/Model Desc LARGE TRANSPORT, LOW WING, 3 TURBOJET ENG
Acft Operator Desc AIR CARRIER
Acft Flight Mission PASSENGER
Acft Flight Phase DESCENT
Acft Flight Plan IFR
Flight Crew Count 3


PERSON INFORMATION

Information For Person Sequence 1

Reporting Organization AIR CARRIER
Flt Crew Exp (last 90 days) 240
Flt Crew Total Exp 12000
Flt Crew Exp 7000
Flt Crew Function PILOT FLYING
Flt Crew Qual Desc INSTRUMENT


Narrative

CLRD TO CROSS FTZ-VOR AT 10000', FROM FL240. TRYING TO DETERMINE CAUSE OF AIRFRAME BUFFET DURING DESCENT. (HAD NOTED BUFFET IN CRUISE AROUND .82-.83 MACH AT FL370.) LEVELED OFF AT FL200, BELIEVING AT 10000' APPROX 20 DME WEST OF FTZ. ATC ASKED ALT, ALL 3 OF US READ "10000", CTLR ADVISED INDICATING FL200, RECLEARED VIA VECTOR TO MAINTAIN 10000. CONTRIBUTING ELEMENTS: 1) NIGHT 2) NEAR END OF 7 PLUS HOUR FLT, 11 PLUS HOUR DUTY DAY 3) PROBLEM DISTR (ANALYSIS NEEDED TO INVOLVE PLT FLYING) 4) COMMUNICATIONS INSIDE AND OUTSIDE.

Information For Person Sequence 2

Flt Crew Function FIRST OFFICER
Flt Crew Qual Desc AIR TRANSPORT PILOT (ATP)


Narrative


Information For Person Sequence 3

ATC Function ENROUTE
ATC Qual Desc FULLY CERTIFIED


Narrative



END REPORT