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Small aircraft encounters severe turbulence on takeoff due to jet blast from aircraft testing engines near departure end of runway.
| Attributes | |
| ACN | 260416 |
| Time | |
| Date | 199401 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : lgb |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : lgb tower : lax |
| Operator | general aviation : personal |
| Make Model Name | Piper Aircraft Corp Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial climbout : takeoff |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | other |
| Make Model Name | McDonnell Douglas Undifferentiated or Other Model |
| Operating Under FAR Part | other : other |
| Navigation In Use | Other Other |
| Flight Phase | ground : holding |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time total : 700 |
| ASRS Report | 260416 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | inflight encounter other other anomaly |
| Independent Detector | other flight crewa other other : unspecified |
| Resolutory Action | flight crew : regained aircraft control other |
| Consequence | faa : reviewed incident with flight crew Other |
| Supplementary | |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
| Airport | procedure or policy : unspecified |
Narrative:
Long beach tower was advised of C-17 running engines adjacent to runway 25L/7R active runway, company ground crew testing a c- 17. Winds were below 4 KTS (calm) VFR. Cessna 172 was cleared to land runway 7R. Aborted landing due to severe turbulence from C-17 engine blast 90 degrees across runway at threshold. I was cleared to takeoff runway 25L. Aware of jet blast from C-17 across departure end, I executed short field takeoff, maximum climb. At departure end 500 ft AGL, encountered severe turbulence and had to fight to control aircraft. Advised tower and they closed runway 27L. Manufacturer was doing engine tests on C-17 with no blast fence and with aircraft pointing n-s with jet blast across active runway. They did not advise tower other than that engines would be at idle. Obviously they were doing run-ups. Much better communication needed between runup crew and ATC. With current wake turbulence problems, we didn't need this.
Original NASA ASRS Text
Title: SMA ENCOUNTERS SEVERE TURB ON TKOF DUE TO JET BLAST FROM ACFT TESTING ENGS NEAR DEP END OF RWY.
Narrative: LONG BEACH TWR WAS ADVISED OF C-17 RUNNING ENGS ADJACENT TO RWY 25L/7R ACTIVE RWY, COMPANY GND CREW TESTING A C- 17. WINDS WERE BELOW 4 KTS (CALM) VFR. CESSNA 172 WAS CLRED TO LAND RWY 7R. ABORTED LNDG DUE TO SEVERE TURB FROM C-17 ENG BLAST 90 DEGS ACROSS RWY AT THRESHOLD. I WAS CLRED TO TKOF RWY 25L. AWARE OF JET BLAST FROM C-17 ACROSS DEP END, I EXECUTED SHORT FIELD TKOF, MAX CLB. AT DEP END 500 FT AGL, ENCOUNTERED SEVERE TURB AND HAD TO FIGHT TO CTL ACFT. ADVISED TWR AND THEY CLOSED RWY 27L. MANUFACTURER WAS DOING ENG TESTS ON C-17 WITH NO BLAST FENCE AND WITH ACFT POINTING N-S WITH JET BLAST ACROSS ACTIVE RWY. THEY DID NOT ADVISE TWR OTHER THAN THAT ENGS WOULD BE AT IDLE. OBVIOUSLY THEY WERE DOING RUN-UPS. MUCH BETTER COM NEEDED BTWN RUNUP CREW AND ATC. WITH CURRENT WAKE TURB PROBS, WE DIDN'T NEED THIS.
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.