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Communications frequency 133 pt 97 MHZ at ZDC ARTCC has received unk interference from an alleged ATIS. A ZDC specialist advised that the problem is ongoing and this interference is specific to a geographical location and disappears when you exit that area. The problem has been reported to facility management, but no corrective action has been taken, according to the ATC specialist.
| Attributes | |
| ACN | 335425 |
| Time | |
| Date | 199605 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : emi |
| State Reference | MD |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : flight engineer pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 15000 flight time type : 1800 |
| ASRS Report | 335425 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Changed to ZDC on 133.97. Seemed to have stuck microphone on frequency and went back to previous controller and asked for better frequency. He said it was known interference -- ATIS -- and told us exactly when it would clear up. He said that ATC, or whoever assigns frequency, refuses to fix problem. Center requested that crews write up the problem to companies and NASA to try and move ATC into acknowledging and fixing a known problem that could be a safety of flight problem.
Original NASA ASRS Text
Title: COMS FREQ 133 PT 97 MHZ AT ZDC ARTCC HAS RECEIVED UNK INTERFERENCE FROM AN ALLEGED ATIS. A ZDC SPECIALIST ADVISED THAT THE PROB IS ONGOING AND THIS INTERFERENCE IS SPECIFIC TO A GEOGRAPHICAL LOCATION AND DISAPPEARS WHEN YOU EXIT THAT AREA. THE PROB HAS BEEN RPTED TO FACILITY MGMNT, BUT NO CORRECTIVE ACTION HAS BEEN TAKEN, ACCORDING TO THE ATC SPECIALIST.
Narrative: CHANGED TO ZDC ON 133.97. SEEMED TO HAVE STUCK MIKE ON FREQ AND WENT BACK TO PREVIOUS CTLR AND ASKED FOR BETTER FREQ. HE SAID IT WAS KNOWN INTERFERENCE -- ATIS -- AND TOLD US EXACTLY WHEN IT WOULD CLR UP. HE SAID THAT ATC, OR WHOEVER ASSIGNS FREQ, REFUSES TO FIX PROB. CTR REQUESTED THAT CREWS WRITE UP THE PROB TO COMPANIES AND NASA TO TRY AND MOVE ATC INTO ACKNOWLEDGING AND FIXING A KNOWN PROB THAT COULD BE A SAFETY OF FLT PROB.
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.