Reporter complaint of volume on TCASII and GPWS during approach.

Attributes
ACN	256967
Time
Date	199311
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord artcc : zbw
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 225 flight time total : 22000 flight time type : 13500
ASRS Report	256967
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

Operating 121 air carrier into ord airport. WX 16 overcast, wind 280/05. Vectored runway 27. 15-17 mi out on final, slowed to 140 KTS. Selected flaps 25 degrees. Proceeded inbound and broke out of overcast. TA TCASII warning at 1 O'clock constantly below 1000 ft. GPWS came on constantly. Landing checklist delayed, missed approach executed. Subsequent landing ok. Recommend that GPWS warnings (aural) be reprogrammed to state the intentions logic of that mode instead of a catch all warning of 'terrain, terrain' i.e., flaps, gear. Recommend that TCASII inside TCA be muted so as not to create more distrs.

Original NASA ASRS Text

Title: RPTR COMPLAINT OF VOLUME ON TCASII AND GPWS DURING APCH.

Narrative: OPERATING 121 ACR INTO ORD ARPT. WX 16 OVCST, WIND 280/05. VECTORED RWY 27. 15-17 MI OUT ON FINAL, SLOWED TO 140 KTS. SELECTED FLAPS 25 DEGS. PROCEEDED INBOUND AND BROKE OUT OF OVCST. TA TCASII WARNING AT 1 O'CLOCK CONSTANTLY BELOW 1000 FT. GPWS CAME ON CONSTANTLY. LNDG CHKLIST DELAYED, MISSED APCH EXECUTED. SUBSEQUENT LNDG OK. RECOMMEND THAT GPWS WARNINGS (AURAL) BE REPROGRAMMED TO STATE THE INTENTIONS LOGIC OF THAT MODE INSTEAD OF A CATCH ALL WARNING OF 'TERRAIN, TERRAIN' I.E., FLAPS, GEAR. RECOMMEND THAT TCASII INSIDE TCA BE MUTED SO AS NOT TO CREATE MORE DISTRS.

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.