0b737-700 captain caused blast damage to a B737-300 aircraft during a high power run-up at the gate.

Attributes
ACN	548713
Time
Date	200205
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : parked
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B737-300
Flight Phase	ground : parked
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 40 flight time total : 14000 flight time type : 7000
ASRS Report	548713
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical ground encounters other non adherence : company policies non adherence : published procedure other anomaly other
Independent Detector	other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : unqualified personnel performance deficiency : testing
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance Company
Primary Problem	Flight Crew Human Performance

Narrative:

Due to inoperative pressurization valve, maintenance advised pilots to run up engines to cure the problem with valve. Aircraft was parked at boarding gate. Captain looked behind aircraft to check clearance for run-up. Captain saw a B737 parked and empty and unattended 100 yards behind. Captain thought 100 yards was sufficient clearance for jetblast. Captain ran up engines to required 60% N1 briefly. A few mins later, other B737 mechanics advised that jetblast had slammed shut their aircraft's entry door, breaking the door's gust lock and deploying the door's emergency slide. Other air carrier's mechanics said their aircraft was not due to be used for 6 hours and they probably could install new gust lock and emergency slide in time to operate their aircraft on schedule. Captain learned to do run-ups only at designated areas, no matter what run-up power to be used.

Original NASA ASRS Text

Title: 0B737-700 CAPT CAUSED BLAST DAMAGE TO A B737-300 ACFT DURING A HIGH PWR RUN-UP AT THE GATE.

Narrative: DUE TO INOP PRESSURIZATION VALVE, MAINT ADVISED PLTS TO RUN UP ENGS TO CURE THE PROB WITH VALVE. ACFT WAS PARKED AT BOARDING GATE. CAPT LOOKED BEHIND ACFT TO CHK CLRNC FOR RUN-UP. CAPT SAW A B737 PARKED AND EMPTY AND UNATTENDED 100 YARDS BEHIND. CAPT THOUGHT 100 YARDS WAS SUFFICIENT CLRNC FOR JETBLAST. CAPT RAN UP ENGS TO REQUIRED 60% N1 BRIEFLY. A FEW MINS LATER, OTHER B737 MECHS ADVISED THAT JETBLAST HAD SLAMMED SHUT THEIR ACFT'S ENTRY DOOR, BREAKING THE DOOR'S GUST LOCK AND DEPLOYING THE DOOR'S EMER SLIDE. OTHER ACR'S MECHS SAID THEIR ACFT WAS NOT DUE TO BE USED FOR 6 HRS AND THEY PROBABLY COULD INSTALL NEW GUST LOCK AND EMER SLIDE IN TIME TO OPERATE THEIR ACFT ON SCHEDULE. CAPT LEARNED TO DO RUN-UPS ONLY AT DESIGNATED AREAS, NO MATTER WHAT RUN-UP PWR TO BE USED.

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.