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An altitude change from 5000 ft to 3000 ft was not given to an MD80 off lgb resulting in a near conflict with traffic at 4000 ft.
| Attributes | |
| ACN | 505790 |
| Time | |
| Date | 200103 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lgb.airport |
| State Reference | CA |
| Altitude | msl single value : 3000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 505790 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation non adherence : clearance |
| Resolutory Action | controller : issued new clearance controller : issued advisory flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure |
Narrative:
Our departure clearance from lgb cleared us to an altitude of 5000 ft. Upon contact with socal departure, we checked in at 2500 ft climbing to 5000 ft. Socal acknowledged and stated we had traffic at our 2 O'clock position at 4000 ft. We asked socal to repeat traffic's position and altitude again and they stated 2 O'clock position and 4000 ft. I reminded them that we were climbing to 5000 ft and they stated that we were supposed to be leveling at 3000 ft. We were able to level at 3000 ft and thereby avoided a potential midair. However, I questioned socal as to who changed our leveloff altitude to 3000 ft and they replied that lgb tower was supposed to have. Lgb tower did not -- repeat, did not -- give us this change to our departure altitude. Also, socal did not catch the error when we first checked on climbing to 5000 ft. Because we were able to level at 3000 ft, no further problem occurred.
Original NASA ASRS Text
Title: AN ALT CHANGE FROM 5000 FT TO 3000 FT WAS NOT GIVEN TO AN MD80 OFF LGB RESULTING IN A NEAR CONFLICT WITH TFC AT 4000 FT.
Narrative: OUR DEP CLRNC FROM LGB CLRED US TO AN ALT OF 5000 FT. UPON CONTACT WITH SOCAL DEP, WE CHKED IN AT 2500 FT CLBING TO 5000 FT. SOCAL ACKNOWLEDGED AND STATED WE HAD TFC AT OUR 2 O'CLOCK POS AT 4000 FT. WE ASKED SOCAL TO REPEAT TFC'S POS AND ALT AGAIN AND THEY STATED 2 O'CLOCK POS AND 4000 FT. I REMINDED THEM THAT WE WERE CLBING TO 5000 FT AND THEY STATED THAT WE WERE SUPPOSED TO BE LEVELING AT 3000 FT. WE WERE ABLE TO LEVEL AT 3000 FT AND THEREBY AVOIDED A POTENTIAL MIDAIR. HOWEVER, I QUESTIONED SOCAL AS TO WHO CHANGED OUR LEVELOFF ALT TO 3000 FT AND THEY REPLIED THAT LGB TWR WAS SUPPOSED TO HAVE. LGB TWR DID NOT -- REPEAT, DID NOT -- GIVE US THIS CHANGE TO OUR DEP ALT. ALSO, SOCAL DID NOT CATCH THE ERROR WHEN WE FIRST CHKED ON CLBING TO 5000 FT. BECAUSE WE WERE ABLE TO LEVEL AT 3000 FT, NO FURTHER PROB OCCURRED.
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.