 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737 crew had communication and ILS interference on approach to sea, due to cellular phone interference.
| Attributes | |
| ACN | 427865 |
| Time | |
| Date | 199902 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : iszi airport : sea |
| State Reference | WA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Navigation In Use | Other |
| Route In Use | approach : straight in |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 220 flight time total : 9200 flight time type : 3000 |
| ASRS Report | 427865 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
On approach noticed communication interference on #1 communication radio. Then captain's HSI needle became wavy and unreliable, then flagged both GS and localizer. First officer's GS and localizer needles were wavy, but did not flag. We called the flight attendants and asked if any passenger were using any electronic devices. They found a passenger using a cell phone. When the cell phone was switched off, navigation and communication reception returned to normal.
Original NASA ASRS Text
Title: B737 CREW HAD COM AND ILS INTERFERENCE ON APCH TO SEA, DUE TO CELLULAR PHONE INTERFERENCE.
Narrative: ON APCH NOTICED COM INTERFERENCE ON #1 COM RADIO. THEN CAPT'S HSI NEEDLE BECAME WAVY AND UNRELIABLE, THEN FLAGGED BOTH GS AND LOC. FO'S GS AND LOC NEEDLES WERE WAVY, BUT DID NOT FLAG. WE CALLED THE FLT ATTENDANTS AND ASKED IF ANY PAX WERE USING ANY ELECTRONIC DEVICES. THEY FOUND A PAX USING A CELL PHONE. WHEN THE CELL PHONE WAS SWITCHED OFF, NAV AND COM RECEPTION RETURNED TO NORMAL.
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.