<< >> NASA ASRS Report 297214, February 1995

B-737 on ground holding short for takeoff. Lear 35 on approach, low visibility ceiling broke out left of course. Go around was initiated, passed over holding aircraft low and behind.

Attributes
ACN	297214
Time
Date	199502
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : hou airport : hou1
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 100
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hou
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : holding
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Learjet 35
Operating Under FAR Part	other : unknown
Flight Phase	descent : approach landing : missed approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 280 flight time total : 17100 flight time type : 12000
ASRS Report	297214
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : ground critical conflict : nmac other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Taxied out for takeoff - visibility 4500 ft RVR - tower couldn't see - had to call passing runways 12L, 12R and 17 while on taxiway H. Once past runway 17 switched to tower, told to taxi up and hold short, aircraft on a 1 mi final. Very shortly a white lear 35 descended out of the clouds right at us. Approximately 20- 30 degrees off runway heading (to the left). We observed aircraft pitch altitude change to a climb and a left bank commenced to miss my tail (B-727 tail 37 ft). He went behind us. We, passenger, could see, feel, and hear the lear. I had no time to respond other than to broadcast 'don't hit me' on tower. Passenger on board were very concerned, scared. NDB approach to runway 4 at hobby has RVR 4000 ft minimums, seems very low for a CAT 1 ILS runway. I have no idea what approach was being flown.

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Original NASA ASRS Text

Title: B-737 ON GND HOLDING SHORT FOR TKOF. LEAR 35 ON APCH, LOW VISIBILITY CEILING BROKE OUT L OF COURSE. GAR WAS INITIATED, PASSED OVER HOLDING ACFT LOW AND BEHIND.

Narrative: TAXIED OUT FOR TKOF - VIS 4500 FT RVR - TWR COULDN'T SEE - HAD TO CALL PASSING RWYS 12L, 12R AND 17 WHILE ON TXWY H. ONCE PAST RWY 17 SWITCHED TO TWR, TOLD TO TAXI UP AND HOLD SHORT, ACFT ON A 1 MI FINAL. VERY SHORTLY A WHITE LEAR 35 DSNDED OUT OF THE CLOUDS RIGHT AT US. APPROX 20- 30 DEGS OFF RWY HDG (TO THE L). WE OBSERVED ACFT PITCH ALT CHANGE TO A CLB AND A L BANK COMMENCED TO MISS MY TAIL (B-727 TAIL 37 FT). HE WENT BEHIND US. WE, PAX, COULD SEE, FEEL, AND HEAR THE LEAR. I HAD NO TIME TO RESPOND OTHER THAN TO BROADCAST 'DON'T HIT ME' ON TWR. PAX ON BOARD WERE VERY CONCERNED, SCARED. NDB APCH TO RWY 4 AT HOBBY HAS RVR 4000 FT MINIMUMS, SEEMS VERY LOW FOR A CAT 1 ILS RWY. I HAVE NO IDEA WHAT APCH WAS BEING FLOWN.

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.