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Maximum weight for landing on wet runway exceeded. Maximum reverse used causing packs to overheat resulting in smoke in cabin.
| Attributes | |
| ACN | 98599 |
| Time | |
| Date | 198811 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : otz |
| State Reference | AK |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 10000 flight time type : 6000 |
| ASRS Report | 98599 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I had briefed on reversing engines to maximum allowable upon landing to my crew with the reasoning that let's get the airplane slowed down on the first half of the runway since we were heavy and braking action was reported as fair. Upon rollout under 80 KTS, the number 2 engine started to compressor stall so I slowly brought it out of reverse. We stopped on the runway with approximately 700' to go before the end. Due to maximum allowable reversing, the air conditioning packs got hot and a hot smell with a little bit of smoke entered the cabin. Out company has no policy on when to use the dry landing data weights versus the wet landing data weights when a runway has snow or ice on it in freezing temperatures. Our landing weight was right in between the maximum allowable landing weight for a dry runway (169000 pounds) and a wet runway (151900 pounds). Looking back on all of this I should have had the second officer turn off the air conditioning packs on short final to prevent the smoke from entering the cabin and I should have used the most conservative landing data. (Wet!!)
Original NASA ASRS Text
Title: MAX WEIGHT FOR LANDING ON WET RWY EXCEEDED. MAX REVERSE USED CAUSING PACKS TO OVERHEAT RESULTING IN SMOKE IN CABIN.
Narrative: I HAD BRIEFED ON REVERSING ENGS TO MAX ALLOWABLE UPON LNDG TO MY CREW WITH THE REASONING THAT LET'S GET THE AIRPLANE SLOWED DOWN ON THE FIRST HALF OF THE RWY SINCE WE WERE HEAVY AND BRAKING ACTION WAS REPORTED AS FAIR. UPON ROLLOUT UNDER 80 KTS, THE NUMBER 2 ENGINE STARTED TO COMPRESSOR STALL SO I SLOWLY BROUGHT IT OUT OF REVERSE. WE STOPPED ON THE RWY WITH APPROXIMATELY 700' TO GO BEFORE THE END. DUE TO MAX ALLOWABLE REVERSING, THE AIR CONDITIONING PACKS GOT HOT AND A HOT SMELL WITH A LITTLE BIT OF SMOKE ENTERED THE CABIN. OUT COMPANY HAS NO POLICY ON WHEN TO USE THE DRY LANDING DATA WEIGHTS VERSUS THE WET LANDING DATA WEIGHTS WHEN A RWY HAS SNOW OR ICE ON IT IN FREEZING TEMPERATURES. OUR LANDING WEIGHT WAS RIGHT IN BETWEEN THE MAX ALLOWABLE LANDING WEIGHT FOR A DRY RWY (169000 LBS) AND A WET RWY (151900 LBS). LOOKING BACK ON ALL OF THIS I SHOULD HAVE HAD THE SECOND OFFICER TURN OFF THE AIR CONDITIONING PACKS ON SHORT FINAL TO PREVENT THE SMOKE FROM ENTERING THE CABIN AND I SHOULD HAVE USED THE MOST CONSERVATIVE LANDING DATA. (WET!!)
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.