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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A giv flight crew fails to follow their clearance from lax, west of V23 and overshooting their assigned altitude of 9000 ft by sct, ca.
| Attributes | |
| ACN | 470560 |
| Time | |
| Date | 200004 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : smo.vor |
| State Reference | CA |
| Altitude | msl bound lower : 9000 msl bound upper : 9400 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other other vortac |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors enroute airway : v23.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 15 flight time total : 24000 flight time type : 500 |
| ASRS Report | 470560 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued alert flight crew : returned to assigned altitude flight crew : returned to original clearance flight crew : returned to intended or assigned course none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew faa : investigated |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On recollection, I certainly think a contributing factor was back around original preflight and flight planning. I entered the filed flight plan in the computer and we completed all checks. When clearance was received, the only difference was V23 versus direct 'shafter' which I didn't enter. After takeoff, crossing the lax 310 degree radial, turn to 250 degrees and cleared to 3000 ft. Subsequent control vectors and a further climb to 7000 ft. I recall cleared to 9000 ft, which was entered in the altitude annunciator. Then we were told to intercept V23, which the captain asked for in the computer. About the same time as I went back into the cockpit (head down) to verify the routing, I heard the captain say his screen had blanked and was going 'standby.' this was in addition to an intermittent #1 transponder, which we had both noticed. As I rummaged between charts and maps, I looked up and saw 9000 ft rapidly approaching on the altimeter and called 'altitude.' the captain immediately banked hard and pushed over (no passenger aboard). No altitude warning was ever heard and I noticed we were back between 7000-8000 ft with a slow rate of climb. Shortly thereafter, center notified us to contact approach's telephone number at destination. I should have been paying more attention to the flight plan.
Original NASA ASRS Text
Title: A GIV FLC FAILS TO FOLLOW THEIR CLRNC FROM LAX, W OF V23 AND OVERSHOOTING THEIR ASSIGNED ALT OF 9000 FT BY SCT, CA.
Narrative: ON RECOLLECTION, I CERTAINLY THINK A CONTRIBUTING FACTOR WAS BACK AROUND ORIGINAL PREFLT AND FLT PLANNING. I ENTERED THE FILED FLT PLAN IN THE COMPUTER AND WE COMPLETED ALL CHKS. WHEN CLRNC WAS RECEIVED, THE ONLY DIFFERENCE WAS V23 VERSUS DIRECT 'SHAFTER' WHICH I DIDN'T ENTER. AFTER TKOF, XING THE LAX 310 DEG RADIAL, TURN TO 250 DEGS AND CLRED TO 3000 FT. SUBSEQUENT CTL VECTORS AND A FURTHER CLB TO 7000 FT. I RECALL CLRED TO 9000 FT, WHICH WAS ENTERED IN THE ALT ANNUNCIATOR. THEN WE WERE TOLD TO INTERCEPT V23, WHICH THE CAPT ASKED FOR IN THE COMPUTER. ABOUT THE SAME TIME AS I WENT BACK INTO THE COCKPIT (HEAD DOWN) TO VERIFY THE ROUTING, I HEARD THE CAPT SAY HIS SCREEN HAD BLANKED AND WAS GOING 'STANDBY.' THIS WAS IN ADDITION TO AN INTERMITTENT #1 XPONDER, WHICH WE HAD BOTH NOTICED. AS I RUMMAGED BTWN CHARTS AND MAPS, I LOOKED UP AND SAW 9000 FT RAPIDLY APCHING ON THE ALTIMETER AND CALLED 'ALT.' THE CAPT IMMEDIATELY BANKED HARD AND PUSHED OVER (NO PAX ABOARD). NO ALT WARNING WAS EVER HEARD AND I NOTICED WE WERE BACK BTWN 7000-8000 FT WITH A SLOW RATE OF CLB. SHORTLY THEREAFTER, CTR NOTIFIED US TO CONTACT APCH'S TELEPHONE NUMBER AT DEST. I SHOULD HAVE BEEN PAYING MORE ATTN TO THE FLT PLAN.
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.