<< >> NASA ASRS Report 215138, July 1992

Pilot of military fgt aircraft group took high-speed evasive action to avoid large transport aircraft crossing an ir route.

Attributes
ACN	215138
Time
Date	199207
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : phk
State Reference	FL
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	other
Make Model Name	Fighter
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute airway : zma
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	government : military
Function	flight crew : single pilot
Qualification	other other : other pilot : instrument pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 7000 flight time type : 450
ASRS Report	215138
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac other anomaly other
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Mako 1 was 1 of a 4-SHIP of fgt aircraft operating IFR on IR34 to 4-2901. ATC control with ZMA. ZMA cleared mako 1 flight to tactical frequency (avon range control frequency) and no issuance of TA's were given. Mako 1 was operating at 500 KTS and 1500 ft MSL noise abatement for that portion of IR34, route altitudes surface-2000 ft MSL. WX was VFR with a haze/scattered cloud-scud layer 1500-2500 ft with 5 mi visibility. Visibility in haze layer varied, but VMC mako 1 was on centerline of IR34, about to enter R-2901H for scheduled military range operations. Mako 1 lead (#1 of 4) visually acquired a high wing single engine light aircraft in the haze/scud layer at less than 1 NM to 1/2 NM crossing left to right (170 degree aspect) head on. Mako 1 initiated 6.5 'G' pull to avoid contact with the light aircraft. Miss distance approximately 500 ft. Visual acquisition range, speed (500 KTS plus) and turn radius at that airspeed and G precluded any action other than a high 'G' vertical pull. Recommend aircraft not transit know 'hot' restr areas and known 'hot' military ir rtes at the operating altitudes of those areas. Rec civil and contact artccs. Military ATC'second officerp agencies to avoid infringement and conflict with military aircraft. Recommend VFR stay VMC and not 'scud run.'

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Original NASA ASRS Text

Title: PLT OF MIL FGT ACFT GROUP TOOK HIGH-SPD EVASIVE ACTION TO AVOID LGT ACFT XING AN IR RTE.

Narrative: MAKO 1 WAS 1 OF A 4-SHIP OF FGT ACFT OPERATING IFR ON IR34 TO 4-2901. ATC CTL WITH ZMA. ZMA CLRED MAKO 1 FLT TO TACTICAL FREQ (AVON RANGE CTL FREQ) AND NO ISSUANCE OF TA'S WERE GIVEN. MAKO 1 WAS OPERATING AT 500 KTS AND 1500 FT MSL NOISE ABATEMENT FOR THAT PORTION OF IR34, RTE ALTS SURFACE-2000 FT MSL. WX WAS VFR WITH A HAZE/SCATTERED CLOUD-SCUD LAYER 1500-2500 FT WITH 5 MI VISIBILITY. VISIBILITY IN HAZE LAYER VARIED, BUT VMC MAKO 1 WAS ON CTRLINE OF IR34, ABOUT TO ENTER R-2901H FOR SCHEDULED MIL RANGE OPS. MAKO 1 LEAD (#1 OF 4) VISUALLY ACQUIRED A HIGH WING SINGLE ENG LIGHT ACFT IN THE HAZE/SCUD LAYER AT LESS THAN 1 NM TO 1/2 NM XING L TO R (170 DEG ASPECT) HEAD ON. MAKO 1 INITIATED 6.5 'G' PULL TO AVOID CONTACT WITH THE LIGHT ACFT. MISS DISTANCE APPROX 500 FT. VISUAL ACQUISITION RANGE, SPD (500 KTS PLUS) AND TURN RADIUS AT THAT AIRSPD AND G PRECLUDED ANY ACTION OTHER THAN A HIGH 'G' VERT PULL. RECOMMEND ACFT NOT TRANSIT KNOW 'HOT' RESTR AREAS AND KNOWN 'HOT' MIL IR RTES AT THE OPERATING ALTS OF THOSE AREAS. REC CIVIL AND CONTACT ARTCCS. MIL ATC'S/OP AGENCIES TO AVOID INFRINGEMENT AND CONFLICT WITH MIL ACFT. RECOMMEND VFR STAY VMC AND NOT 'SCUD RUN.'

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.