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Eri VOR 110 pt 8 channel 45 and esl VOR 110 pt 8 channel 45 approximately 200 miles separation. Approximately midway between the two, flight crew, on two flts, received erroneous DME.
| Attributes | |
| ACN | 109214 |
| Time | |
| Date | 198904 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : esl |
| State Reference | WV |
| Altitude | msl bound lower : 25000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport |
| Navigation In Use | other vortac other vortac |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors enroute : direct enroute airway : j34 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 15200 flight time type : 120 |
| ASRS Report | 109214 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated controller : issued new clearance flight crew : became reoriented |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
Our route of flight was dtw aco air J34 bucko esl iad FL330. After passing air VOR, cle ARTCC cleared us 'pilot discretion to FL310, cross 25 northwest esl at FL250'. I was in the process of finishing my crew meal at the time. The first officer tuned in esl VOR for the dogleg and said we had plenty of time. The DME showed 147 NM. By the time I stopped thinking that ARTCC gave us an early clearance, the first officer's DME broke lock and then locked on at 33 DME. We knew we couldn't make the crossing restriction, so we asked ARTCC for altitude relief. They turned us to a heading of 060 until we reached FL250, then direct esl VOR. At first we thought the first officer's DME hundredths digit stuck on '1' when it initially locked on to esl VOR. 2 hours later, we flew flight cle/iad. Passing air VOR, the first officer tuned in esl VOR and again got a DME of 100+ NM. I listened to the identification signal. The VOR signal was from esl VOR, but the DME signal was from eri VOR (erie, PA). I consequently reported the incident to our flight office so they could discuss the NAVAID problem with ARTCC.
Original NASA ASRS Text
Title: ERI VOR 110 PT 8 CHANNEL 45 AND ESL VOR 110 PT 8 CHANNEL 45 APPROX 200 MILES SEPARATION. APPROXIMATELY MIDWAY BETWEEN THE TWO, FLT CREW, ON TWO FLTS, RECEIVED ERRONEOUS DME.
Narrative: OUR ROUTE OF FLT WAS DTW ACO AIR J34 BUCKO ESL IAD FL330. AFTER PASSING AIR VOR, CLE ARTCC CLRED US 'PLT DISCRETION TO FL310, CROSS 25 NW ESL AT FL250'. I WAS IN THE PROCESS OF FINISHING MY CREW MEAL AT THE TIME. THE F/O TUNED IN ESL VOR FOR THE DOGLEG AND SAID WE HAD PLENTY OF TIME. THE DME SHOWED 147 NM. BY THE TIME I STOPPED THINKING THAT ARTCC GAVE US AN EARLY CLRNC, THE F/O'S DME BROKE LOCK AND THEN LOCKED ON AT 33 DME. WE KNEW WE COULDN'T MAKE THE XING RESTRICTION, SO WE ASKED ARTCC FOR ALT RELIEF. THEY TURNED US TO A HDG OF 060 UNTIL WE REACHED FL250, THEN DIRECT ESL VOR. AT FIRST WE THOUGHT THE F/O'S DME HUNDREDTHS DIGIT STUCK ON '1' WHEN IT INITIALLY LOCKED ON TO ESL VOR. 2 HRS LATER, WE FLEW FLT CLE/IAD. PASSING AIR VOR, THE F/O TUNED IN ESL VOR AND AGAIN GOT A DME OF 100+ NM. I LISTENED TO THE IDENTIFICATION SIGNAL. THE VOR SIGNAL WAS FROM ESL VOR, BUT THE DME SIGNAL WAS FROM ERI VOR (ERIE, PA). I CONSEQUENTLY REPORTED THE INCIDENT TO OUR FLT OFFICE SO THEY COULD DISCUSS THE NAVAID PROBLEM WITH ARTCC.
Data retrieved from NASA's ASRS site as of August 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.