At night when osh tower is closed, the osh ATIS broadcast interferes with day ATIS.

Attributes
ACN	135555
Time
Date	199002
Place
Locale Reference	atc facility : osh
State Reference	WI
Altitude	msl bound lower : 35000 msl bound upper : 35000
Aircraft 1
Controlling Facilities	artcc : zau
Operator	common carrier : air carrier
Make Model Name	Heavy Transport, Low Wing, 4 Turbojet Eng
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
ASRS Report	135555
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

This is not an incident. At night when osh tower is closed, the ATIS broadcasts for a couple hundred miles on 125.8 that the tower is closed. I am a pilot going into day from pdx. Day's ATIS is also 125.8, but it is blocked until 120-150 mi at best by osh's ATIS. It would be great if we could get day's ATIS earlier--we could plan much better and it would work much easier for us. I suggest changing the osh ATIS frequency so that it does not interfere with day's for aircraft approaching from the west. Callback conversation with reporter revealed the following: reporter states, 'we are generally well east of chicago before we get out of the range of osh ATIS and can then read day ATIS. Not a huge problem to get the ATIS late in descent, but it would facility our procedure immensely if we could obtain the day ATIS sooner.'

Original NASA ASRS Text

Title: AT NIGHT WHEN OSH TWR IS CLOSED, THE OSH ATIS BROADCAST INTERFERES WITH DAY ATIS.

Narrative: THIS IS NOT AN INCIDENT. AT NIGHT WHEN OSH TWR IS CLOSED, THE ATIS BROADCASTS FOR A COUPLE HUNDRED MILES ON 125.8 THAT THE TWR IS CLOSED. I AM A PLT GOING INTO DAY FROM PDX. DAY'S ATIS IS ALSO 125.8, BUT IT IS BLOCKED UNTIL 120-150 MI AT BEST BY OSH'S ATIS. IT WOULD BE GREAT IF WE COULD GET DAY'S ATIS EARLIER--WE COULD PLAN MUCH BETTER AND IT WOULD WORK MUCH EASIER FOR US. I SUGGEST CHANGING THE OSH ATIS FREQ SO THAT IT DOES NOT INTERFERE WITH DAY'S FOR ACFT APCHING FROM THE W. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR STATES, 'WE ARE GENERALLY WELL E OF CHICAGO BEFORE WE GET OUT OF THE RANGE OF OSH ATIS AND CAN THEN READ DAY ATIS. NOT A HUGE PROB TO GET THE ATIS LATE IN DSCNT, BUT IT WOULD FACILITY OUR PROC IMMENSELY IF WE COULD OBTAIN THE DAY ATIS SOONER.'

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.