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|
Attributes | |
ACN | 635706 |
Time | |
Date | 200411 |
Day | Tue |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | intersection : mitoe |
State Reference | CA |
Altitude | msl single value : 3800 |
Environment | |
Light | Night |
Aircraft 1 | |
Controlling Facilities | tracon : nct.tracon |
Operator | common carrier : air carrier |
Make Model Name | B737-300 |
Operating Under FAR Part | Part 121 |
Flight Phase | descent : approach |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
ASRS Report | 635706 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Events | |
Independent Detector | aircraft equipment : gpws other flight crewa other flight crewb |
Resolutory Action | flight crew : took evasive action other |
Supplementary | |
Problem Areas | Aircraft |
Primary Problem | Aircraft |
Narrative:
After crossing sharr intersection, air carrier X was cleared direct to mitoe intersection. Subsequently we were cleared for the visual approach to runway 29, remain at or above 2000 ft MSL until 6 DME. The highest terrain depicted on the 11-3 for ILS runway 29 is 1834 ft MSL east of mitoe. Though clearance direct mitoe for the visual is standard, I have never been tracking to mitoe from a point as far north as sharr. At approximately 3800 ft MSL and 5 mi east of mitoe we received a terrain warning followed immediately by a pull up command. I immediately disengaged the autoplt and applied heavy back pressure, simultaneously the first officer (PF) applied thrust and the warning ceased. Oak runway 29 and the extended centerline ground track were clearly visible throughout the event. At the completion of the pull up maneuver the aircraft was approximately 1 mi from mitoe and already in a position requiring a turn to intercept the centerline. The 'terr' function of the egpws was on throughout the event but this was a hardball 300 and the radar/terrain display was obscured by the 'speedbook/toldcard' and thrust lever quadrant.
Original NASA ASRS Text
Title: B737-300 CREW GOT A EGPWS 'TERRAIN' WARNING AT 3800 FT GOING INTO RWY 29 AT OAK.
Narrative: AFTER XING SHARR INTXN, ACR X WAS CLRED DIRECT TO MITOE INTXN. SUBSEQUENTLY WE WERE CLRED FOR THE VISUAL APCH TO RWY 29, REMAIN AT OR ABOVE 2000 FT MSL UNTIL 6 DME. THE HIGHEST TERRAIN DEPICTED ON THE 11-3 FOR ILS RWY 29 IS 1834 FT MSL E OF MITOE. THOUGH CLRNC DIRECT MITOE FOR THE VISUAL IS STANDARD, I HAVE NEVER BEEN TRACKING TO MITOE FROM A POINT AS FAR N AS SHARR. AT APPROX 3800 FT MSL AND 5 MI E OF MITOE WE RECEIVED A TERRAIN WARNING FOLLOWED IMMEDIATELY BY A PULL UP COMMAND. I IMMEDIATELY DISENGAGED THE AUTOPLT AND APPLIED HVY BACK PRESSURE, SIMULTANEOUSLY THE FO (PF) APPLIED THRUST AND THE WARNING CEASED. OAK RWY 29 AND THE EXTENDED CTRLINE GND TRACK WERE CLRLY VISIBLE THROUGHOUT THE EVENT. AT THE COMPLETION OF THE PULL UP MANEUVER THE ACFT WAS APPROX 1 MI FROM MITOE AND ALREADY IN A POS REQUIRING A TURN TO INTERCEPT THE CTRLINE. THE 'TERR' FUNCTION OF THE EGPWS WAS ON THROUGHOUT THE EVENT BUT THIS WAS A HARDBALL 300 AND THE RADAR/TERRAIN DISPLAY WAS OBSCURED BY THE 'SPEEDBOOK/TOLDCARD' AND THRUST LEVER QUADRANT.
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.