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Near midair collision of taxiing DC8 cargo aircraft and C152 or C172. Clearance conflict between ground controller and tower controller resulted in aircraft taking off over the top of reporter aircraft as it was taxiing across runway.
| Attributes | |
| ACN | 347361 |
| Time | |
| Date | 199609 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lgb |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-8 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground other : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Cessna Single Piston Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 10500 flight time type : 3000 |
| ASRS Report | 347361 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 75 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Intra Facility Coordination Failure |
Narrative:
We landed on runway 30 and cleared the runway at taxiway a. We contacted ground control and received the following instructions: 'cleared to taxi via taxiway D, cleared to cross runway 25R, hold short of runway 25L, aircraft holding full length runway 25R.' the first officer read back the entire clearance to ground control and I read the clearance back to the first officer. I then called for the after landing checklist and began the taxi down taxiway D. Prior to reaching runway 25R I noted the aircraft on the runway at the departure end. As we crossed runway 25R I realized that the aircraft had taken off and passed approximately 50-100 ft directly over our aircraft. We immediately tried to call ground control but received no response. After about 10 seconds, we called again. Ground control responded and stated that he had seen the incident and was checking it out. We obtained the tower phone number and continued the taxi to parking without further incident. Simultaneous operations to intersecting runways were in effect. It appears that there was some miscoms either with ground control and tower control or that the other aircraft did not understand the hold instructions and took off without proper clearance. We can only speculate since we were on ground control frequency at the time.
Original NASA ASRS Text
Title: NMAC OF TAXIING DC8 CARGO ACFT AND C152 OR C172. CLRNC CONFLICT BTWN GND CTLR AND TWR CTLR RESULTED IN ACFT TAKING OFF OVER THE TOP OF RPTR ACFT AS IT WAS TAXIING ACROSS RWY.
Narrative: WE LANDED ON RWY 30 AND CLRED THE RWY AT TXWY A. WE CONTACTED GND CTL AND RECEIVED THE FOLLOWING INSTRUCTIONS: 'CLRED TO TAXI VIA TXWY D, CLRED TO CROSS RWY 25R, HOLD SHORT OF RWY 25L, ACFT HOLDING FULL LENGTH RWY 25R.' THE FO READ BACK THE ENTIRE CLRNC TO GND CTL AND I READ THE CLRNC BACK TO THE FO. I THEN CALLED FOR THE AFTER LNDG CHKLIST AND BEGAN THE TAXI DOWN TXWY D. PRIOR TO REACHING RWY 25R I NOTED THE ACFT ON THE RWY AT THE DEP END. AS WE CROSSED RWY 25R I REALIZED THAT THE ACFT HAD TAKEN OFF AND PASSED APPROX 50-100 FT DIRECTLY OVER OUR ACFT. WE IMMEDIATELY TRIED TO CALL GND CTL BUT RECEIVED NO RESPONSE. AFTER ABOUT 10 SECONDS, WE CALLED AGAIN. GND CTL RESPONDED AND STATED THAT HE HAD SEEN THE INCIDENT AND WAS CHKING IT OUT. WE OBTAINED THE TWR PHONE NUMBER AND CONTINUED THE TAXI TO PARKING WITHOUT FURTHER INCIDENT. SIMULTANEOUS OPS TO INTERSECTING RWYS WERE IN EFFECT. IT APPEARS THAT THERE WAS SOME MISCOMS EITHER WITH GND CTL AND TWR CTL OR THAT THE OTHER ACFT DID NOT UNDERSTAND THE HOLD INSTRUCTIONS AND TOOK OFF WITHOUT PROPER CLRNC. WE CAN ONLY SPECULATE SINCE WE WERE ON GND CTL FREQ AT THE TIME.
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.