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Captain of large transport reporting possibility of ozone encounter that caused cabin attendants to become nauseous with some tingling.
| Attributes | |
| ACN | 198738 |
| Time | |
| Date | 199201 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : mem |
| State Reference | TN |
| Altitude | msl bound lower : 24000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 180 flight time total : 8000 flight time type : 3000 |
| ASRS Report | 198738 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe inflight encounter other other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
After approximately 25 mins of flight and at FL350 'C' flight attendant reported feeling light headed, nauseous. A DH pilot also reported some constriction in breathing. Cockpit oxygen was administered to 'C' flight attendant and a descent to FL240 was initiated to preclude ozone exposure. Additional symptoms were now reported by the other 3 flight attendants (listless, slight tingling). Investigated nature of hazardous material package in pit one with memphis operations. Material was coded H-5 (radioactive citrate, chloride liquid). At approximately 45-50 mins of flight, cockpit crew began to feel slight 'ozone like' symptoms (headache, tingling). Crew went on oxygen and completed descent and landing without incident. Upon arrival at gate and after passenger commenced deplaning a fire on the right wing was reported by the aft flight attendant. An orderly evacuate/evacuation was conducted through the forward entry door and aft exit (air stair). No incidents. Apparently APU torched very late in starting cycle after crew had assumed it was stable.
Original NASA ASRS Text
Title: CAPT OF LGT RPTING POSSIBILITY OF OZONE ENCOUNTER THAT CAUSED CABIN ATTENDANTS TO BECOME NAUSEOUS WITH SOME TINGLING.
Narrative: AFTER APPROX 25 MINS OF FLT AND AT FL350 'C' FLT ATTENDANT RPTED FEELING LIGHT HEADED, NAUSEOUS. A DH PLT ALSO RPTED SOME CONSTRICTION IN BREATHING. COCKPIT OXYGEN WAS ADMINISTERED TO 'C' FLT ATTENDANT AND A DSCNT TO FL240 WAS INITIATED TO PRECLUDE OZONE EXPOSURE. ADDITIONAL SYMPTOMS WERE NOW RPTED BY THE OTHER 3 FLT ATTENDANTS (LISTLESS, SLIGHT TINGLING). INVESTIGATED NATURE OF HAZARDOUS MATERIAL PACKAGE IN PIT ONE WITH MEMPHIS OPS. MATERIAL WAS CODED H-5 (RADIOACTIVE CITRATE, CHLORIDE LIQUID). AT APPROX 45-50 MINS OF FLT, COCKPIT CREW BEGAN TO FEEL SLIGHT 'OZONE LIKE' SYMPTOMS (HEADACHE, TINGLING). CREW WENT ON OXYGEN AND COMPLETED DSCNT AND LNDG WITHOUT INCIDENT. UPON ARR AT GATE AND AFTER PAX COMMENCED DEPLANING A FIRE ON THE R WING WAS RPTED BY THE AFT FLT ATTENDANT. AN ORDERLY EVAC WAS CONDUCTED THROUGH THE FORWARD ENTRY DOOR AND AFT EXIT (AIR STAIR). NO INCIDENTS. APPARENTLY APU TORCHED VERY LATE IN STARTING CYCLE AFTER CREW HAD ASSUMED IT WAS STABLE.
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.