Accident Aero Vodochody L-39ZO Albatros N298RD,
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ASN Wikibase Occurrence # 45105
 
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Date:Sunday 24 August 2003
Time:11:15
Type:Silhouette image of generic L39 model; specific model in this crash may look slightly different    
Aero Vodochody L-39ZO Albatros
Owner/operator:Bond Jet LLC
Registration: N298RD
MSN: 731013
Total airframe hrs:2292 hours
Engine model:Aerotechnik AI-25TL
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Destroyed
Category:Accident
Location:Forest Hill, MD -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Private
Departure airport:Baltimore, MD (MTN)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
Several witnesses observed the airplane approach the airpark, proceed over the runway low level, and initiate a go-around. During the go-around, the airplane pitched upwards and began to lose velocity. At the peak of the airplane's accent, the airplane stalled, nosed over, and descended towards the ground. The airplane impacted the southwest corner of a 3-story residential home, located about 1/2-mile west of the airpark, and subsequently impacted the ground, where a post crash fire ensued. Examination of the engine's fuel control revealed that the throttle arm was in the full power position. Examination of the cockpit area revealed that the engine tachometer needles were observed at "28 percent" for N1, and "56 percent" for N2. The fuel pressure needle was observed at its normal pressure reading for a high power setting, and the oil pressure needle and oil temperature gages were observed at a position consistent with the engine developing power. According to the airplanes Flight Training manual, the time required for the engine to accelerate from a low engine speed to high engine speed (idle to max power), was approximately 9 to 12 seconds. The pilot had accumulated about 25 hours of total flight experience in the L-39. The pilot had been informed in the past by the manager of the airplane to maintain 75 percent rpm or better while landing, in the event that a go-around had to be executed. The manager accentuated to the pilot that he needed to be aware that the engine took close to 12 seconds to spool up, and having the extra power lessened the engines response time in the event of a go-around. No pre-impact abnormalities with the airframe or powerplant were observed.
Probable Cause: The pilot's in-flight decision to delay application of engine power to account for the engine's slow response to throttle input, which resulted in an inadvertent stall and subsequent collision with a residential area. A factor related to the accident was the pilot's lack of experience in jet-powered airplanes.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: NYC03FA180
Status: Investigation completed
Duration:
Download report: Final report

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20030909X01491&key=1

Location

Revision history:

Date/timeContributorUpdates
28-Oct-2008 00:45 ASN archive Added
21-Dec-2016 19:24 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
08-Dec-2017 19:10 ASN Update Bot Updated [Operator, Source, Narrative]
25-Feb-2020 21:17 Xindel XL Updated [Aircraft type, Operator]

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