# NTSB MIA93LA181: Grumman AA-5, N11LT, Delray Beach, FL, August 17, 1993 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 17, 1993, 09:00 local (13:00 UTC) - Place: Delray Beach, FL - Coordinates: 26.449926, -80.190467 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=26.4499&lon=-80.1905&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report June 30, 1994 - Report: Approved by Office Director - NTSB case key (mKey): 37387 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA93LA181 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37387/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=37387 - Page: https://openairdocs.org/ntsb/MIA93LA181 ## Probable cause THE PILOT-IN-COMMAND'S/FLIGHT INSTRUCTOR FAILURE TO COMMUNICATE HIS INTENTIONS WITH THE STUDENT PILOT TO EFFECT A POSITIVE TRANSFER OF THE FLIGHT CONTROLS, AND IMPROPER HANDLING OF THE AIRPLANE ON LANDING ROLL OUT, RESULTING IN AN ON GROUND COLLISION WITH A FENCE. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Miscellaneous/other, landing - roll - aircraft handling - improper, pilot in command(cfi) (cause) - instructions,written/verbal - not issued, pilot in command(cfi) (cause) - relinquishing of control - not performed, dual student (contributing factor) - Overrun, landing - roll - On ground/water collision with object, landing - roll - object - fence ## Analysis THE STUDENT PILOT WAS MAKING A FULL STOP LANDING WITH THE FLIGHT INSTRUCTOR FOLLOWING THROUGH ON THE FLIGHT CONTROLS. ON LANDING, THE AIRPLANE BOUNCED AND YAWED TO THE RIGHT. THE STUDENT PILOT AND FLIGHT INSTRUCTOR APPLIED LEFT RUDDER AND BRAKES, AND THE AIRPLANE STARTED TO SKID SIDEWAYS. THE FLIGHT INSTRUCTOR TOOK CONTROL OF THE AIRPLANE WITHOUT INFORMING THE STUDENT PILOT. THE STUDENT PILOT INCREASED THE THROTTLE AND THE FLIGHT INSTRUCTOR DECREASED THE POWER TO THE IDLE POSITION. THE AIRPLANE CONTINUED THROUGH THE OVERRUN AND COLLIDED WITH A FENCE. ## Factual narrative On August 17, 1993, at about 0900 eastern daylight time, a Grumman AA-5B, N11LT, registered to 11 Lima Tango Inc., operating as a 14 CFR Part 91 instructional flight crashed on landing. The airplane sustained substantial damage. Neither the commercial pilot/flight instructor or student pilot were injured. Visual meteorological conditions prevailed and no flight plan was filed. The flight originated about 30 minutes before the accident. The flight instructor stated to the NTSB investigator-in-charge that the student pilot was making a full flap landing to runway 09, and that he was following through on the flight controls with the student pilot. On landing the airplane bounced and yawed to the right. Both he and the student pilot applied left rudder and brakes. The airplane started to skid sideways and he took control of the airplane without informing the student pilot. The student pilot increased power and he decreased power to the idle position. The airplane continued through the overrun and collided with a fence. ## Aircraft - Registration: [N11LT](https://openairdocs.org/aircraft/N11LT), registered now, S/N AA5B0616, built 1977 (OpenAirDocs) - Reported make and model: GRUMMAN AA-5 - Registry model: [Grumman American Avn. AA-5B](https://openairdocs.org/model/grumman-american-avn-aa-5b) (registry code 3960105) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: AA580616 - Engines: LYCOMING IO-360 180 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: 11 Lima Tango Inc. - Registered owner: 11 Lima Tango Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Unknown, January 2, 2000 - Departed: 3X1, ANTIQUERS, FL - Destination: 3X1 - Airport: 3X1, Antiquers, runway 9, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 20; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 575 total, 2 in this make and model, 475 as pilot in command, 62 in the last 90 days, 10 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 290° at 5 knots - Lowest ceiling: none - Temperature: 77 °F, dew point 73 °F - Altimeter: 29.00 inHg - Observed at: PBI, 5 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19930817034099A](https://openairdocs.org/incident/19930817034099A), Aug 17, 1993: Gulstm AA5B, Delray Beach, FL, Substantial damage. Student bounced lost control landing. CFI took over but did not advise student. Conflicting actions caused overrun. ## Docket (4 files) The files NTSB released with the investigation on June 3, 1995, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=37387. 1.1 MB in all. - Supplement E (item 1, .PDF, 147 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40006987&FileExtension=.PDF&FileName=Supplement%20E-Master.PDF - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 - Pilot (item 2, .PDF, 334 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459716&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1%20-%20Pilot-Master.PDF - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 - Owner (item 3, .PDF, 516 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459717&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1%20-%20Owner-Master.PDF - Pilot's Statement (item 4, .PDF, 113 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459718&FileExtension=.PDF&FileName=Pilot%27s%20Statement-Master.PDF From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.