Following a partial flap failure to extend the flight crew of a crj-200 opted to divert to an airpor...

Attributes
ACN	980228
Time
Date	201111
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Flap Control (Trailing & Leading Edge)
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

While on approach we had a flap fail caution message with flaps failed at eight degrees. I was the pilot not flying so I gave the radios to the first officer while he flew and I ran the QRH. Procedure had us land with flaps 8 and in computing the landing distance; I came up with a landing distance required of about 6;885 ft. Our landing runway was only about 6;600 ft; figuring we were going to need a longer runway we elected to divert. Our landing was uneventful; however; we noticed the aircraft did not take much runway to stop. After taxiing to the gate we realized I had used 'required' runway landing distance from the ACARS landing data and not the 'actual' landing distance. Although diverting was a more conservative action; the runway length we required for the flap failure was only about 4;300 ft and we could've landed safely at our destination.

Original NASA ASRS Text

Title: Following a partial flap failure to extend the flight crew of a CRJ-200 opted to divert to an airport with a longer runway only to discover; after landing; that they had misinterpreted the runway length required and could have landed legally at their original destination.

Narrative: While on approach we had a FLAP FAIL caution message with flaps failed at eight degrees. I was the pilot not flying so I gave the radios to the First Officer while he flew and I ran the QRH. Procedure had us land with flaps 8 and in computing the landing distance; I came up with a landing distance required of about 6;885 FT. Our landing runway was only about 6;600 FT; figuring we were going to need a longer runway we elected to divert. Our Landing was uneventful; however; we noticed the aircraft did not take much runway to stop. After taxiing to the gate we realized I had used 'required' runway landing distance from the ACARS landing data and not the 'Actual' landing distance. Although diverting was a more conservative action; the runway length we required for the flap failure was only about 4;300 FT and we could've landed safely at our destination.

Data retrieved from NASA's ASRS site as of April 2012 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.

Following a partial flap failure to extend the flight crew of a crj-200 opted to divert to an airport with a longer runway only to discover; after landing; that they had misinterpreted the runway length required and could have landed legally at their original destination.