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Dispatcher would like additional landing data for flight planning the dash 8-400 into airports when the runways are snow covered.
| Attributes | |
| ACN | 783536 |
| Time | |
| Date | 200804 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Q400 (Formerly Dash 8-400) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel |
| Qualification | other |
| ASRS Report | 783536 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : unable |
| Supplementary | |
| Problem Areas | Chart Or Publication Company |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | Performance Data |
Narrative:
Dispatchers need guidance for the Q-400 landing report when contamination is selected. Company allows for three levels of contamination but the fsm only shows contamination levels for takeoff not landing. In addition; the landing report only shows flaps 35 and 15 with contamination but no levels. What does the crew use for the contamination levels for landing? In preparing a ZZZ release I discovered the planning data line could show a more restr landing weight but this information is not available in the performance report tables on the release.callback conversation with reporter revealed the following information: the reporter indicated that the dash 8-400 performance manual identifies three levels of contamination. These levels reflect the water content of snow for determining takeoff limitations. These charts are available for takeoff; but not for landing. The reporter would prefer similar data; if available; to determine the landing limitation for the more restr airports in the company's route structure. The data available only categorizes landing performance with regard to the depth of snow. Performance data for other aircraft in the airline's fleet is not as specific with regard to identifying contamination.
Original NASA ASRS Text
Title: DISPATCHER WOULD LIKE ADDITIONAL LNDG DATA FOR FLT PLANNING THE DASH 8-400 INTO ARPTS WHEN THE RWYS ARE SNOW COVERED.
Narrative: DISPATCHERS NEED GUIDANCE FOR THE Q-400 LNDG RPT WHEN CONTAMINATION IS SELECTED. COMPANY ALLOWS FOR THREE LEVELS OF CONTAMINATION BUT THE FSM ONLY SHOWS CONTAMINATION LEVELS FOR TAKEOFF NOT LNDG. IN ADDITION; THE LNDG RPT ONLY SHOWS FLAPS 35 AND 15 WITH CONTAMINATION BUT NO LEVELS. WHAT DOES THE CREW USE FOR THE CONTAMINATION LEVELS FOR LNDG? IN PREPARING A ZZZ RELEASE I DISCOVERED THE PLANNING DATA LINE COULD SHOW A MORE RESTR LNDG WT BUT THIS INFORMATION IS NOT AVAILABLE IN THE PERFORMANCE RPT TABLES ON THE RELEASE.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR INDICATED THAT THE DASH 8-400 PERFORMANCE MANUAL IDENTIFIES THREE LEVELS OF CONTAMINATION. THESE LEVELS REFLECT THE WATER CONTENT OF SNOW FOR DETERMINING TKOF LIMITATIONS. THESE CHARTS ARE AVAILABLE FOR TKOF; BUT NOT FOR LNDG. THE RPTR WOULD PREFER SIMILAR DATA; IF AVAILABLE; TO DETERMINE THE LNDG LIMITATION FOR THE MORE RESTR ARPTS IN THE COMPANY'S RTE STRUCTURE. THE DATA AVAILABLE ONLY CATEGORIZES LNDG PERFORMANCE WITH REGARD TO THE DEPTH OF SNOW. PERFORMANCE DATA FOR OTHER ACFT IN THE AIRLINE'S FLEET IS NOT AS SPECIFIC WITH REGARD TO IDENTIFYING CONTAMINATION.
Data retrieved from NASA's ASRS site as of May 2009 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.