# Accident 19980711036199A: Let L13BLANIK, Hammonton, NJ, July 11, 1998

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 11, 1998
- Place: Hammonton, NJ
- Airport: Hammonton Municipal Airport
- Damage: Substantial damage
- Phase of flight: Level Off Touchdown
- Operating rules: General operating rules (Part 91)
- Location: 39.6675° N, 74.7577° W: Placed by OpenAirDocs at HAMMONTON MUNI (N81), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.6675&lon=-74.7577&mi=10
- Aircraft: N49CC, a cancelled registration (https://openairdocs.org/deregistered/N49CC-2012-12-13) (OpenAirDocs)
- Registry model: Let BLANIK L-13 (registry code 1360306, https://openairdocs.org/model/let-blanik-l-13) (OpenAirDocs)
- Registry engine: NONE (registry code 00000, https://openairdocs.org/engine/none) (OpenAirDocs)
- Reported make and model: LET L13BLANIK
- People aboard: 2
- Fatal injuries: 0
- NTSB investigation: [NTSB IAD98LA114](https://openairdocs.org/ntsb/IAD98LA114) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19980711036199A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

INVESTIGATION ON-GOING TO DETERMINE PIC OF AIRCRAFT. (.19) ON JULY 11, 1998, AT 1630 EASTERN DAYLIGHT TIME, A BLANIK L-13 GLIDER, N49CC, WAS SUBSTANTIALLY DAMAGED DURING LANDING AT THE HAMMONTON AIRPORT (N81), HAMMONTON, NEW JERSEY. THE CERTIFICATED PRIVATE PILOT AND PASSENGER WERE NOT INJURED. VISUAL METEOROLOGICAL CONDITIONS PREVAILED FOR THE LOCAL PERSONAL FLIGHT THAT ORIGINATED AT N81, AT 1430. NO FLIGHT PLAN HAD BEEN FILED FOR THE FLIGHT CONDUCTED UNDER 14 CFR PART 91. IN A WRITTEN STATEMENT, THE PILOT SAID: "THIS WAS A LOCAL SOARING FLIGHT LASTING JUST UNDER TWO HOURS IN GOOD WEATHER WITH A PASSENGER...ABOARD. THE AIRCRAFT WAS WITHIN CG LIMITS AND BELOW GROSS WEIGHT. THE LANDING THAT TERMINATED THIS FLIGHT WAS A FIRM TOUCHDOWN ON OR NEAR THE RUNWAY CENTERLINE IN A LIGHT CROSSWIND, WITH NO SIGNIFICANT AIRCRAFT SIDE DRIFT AT THE MOMENT OF TOUCHDOWN...I HEARD A `BANG' AT TOUCHDOWN, FOLLOWED BY SCRAPING NOISES AS THE AIRCRAFT CAME TO A STOP." PRELIMINARY EXAMINATION OF THE GLIDER BY FEDERAL AVIATION ADMINISTRATION (FAA) AVIATION SAFETY INSPECTORS REVEALED ONLY MINOR DAMAGE. DETAILED EXAMINATION OF THE GLIDER DURING REPAIRS REVEALED THE GLIDER HAD SUSTAINED SUBSTANTIAL DAMAGE.    THE CERTIFICATED AIRFRAME AND POWERPLANT MECHANIC WHO PERFORMED THE REPAIR WORK RECORDED HIS OBSERVATIONS IN A WRITTEN STATEMENT. HE SAID: "SUBSTANTIAL DAMAGE TO THE FLOOR BETWEEN FRAMES #3 AND #5 AND ASSOCIATED STRUCTURAL SUPPORT MEMBERS WAS FOUND. THE LOWER SKINS BETWEEN FRAMES 1 & 3 AND 3 & 5 WERE DAMAGED ALONG WITH THE SHOCK ABSORBER MOUNTING PINS. THE SHOCK ABSORBER WAS FOUND TO BE FULL OF FLUID INSTEAD OF HALF FLUID AND HALF 468 PSI NITROGEN. THIS RESULTED IN THE SHOCK ABSORBER BEING A RIGID DEVICE. BECAUSE THIS DEVICE WAS IMPROPERLY SERVICED SOMETIME IN THE PAST, IT TRANSFERRED LANDING LOADS DIRECTLY TO THE ABOVE NAMED STRUCTURES INSTEAD OF DISSIPATING THEM." (-23) PILOT STATED HE DEPARTED N81 ON A LOCAL SOARING FLIGHT WHICH LASTED APPROX. 2 HOURS WITH ONE PASSENGER. UPON LANDING, THE PILOT STATED THAT A FIRM LANDING WAS ACCOMPLISHED WITH A 5 KNOT CROSSWIND, HE ESTIMATED. AT TOUCHDOWN HE HEARD A LOUD BANG AND SCRAPING SOUNDS. THE A/C CAME TO REST WITH NO INJURIES TO THE OCCUPANTS AND SUBSTANTIAL DAMAGE TO THE A/C. PERSONNEL OF THE PHILADELPHIA FSDO PERFORMED AN INSPECTION OF THE AIRCRAFT AT THE HOME OF ^PRIVACY DATA OMITTED^ WHERE THE A/C                                     WAS ALREADY UNDER PARTIAL REPAIR. THIS INSPECTION REVEALED DAMAGE TO THE STRUT MOUNT. STRUT MOUNT TORN FROM 4G BULKHEAD. THIS AREA IS THE INTERIOR FLOOR OF COCKPIT. LAST ANNUAL INSPECTION C/W AT 4/3/98 AC #827.5.

## The NTSB's investigation of this event (1)

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.

- [NTSB IAD98LA114](https://openairdocs.org/ntsb/IAD98LA114), Jul 11, 1998: Let Blanik L-13 (N49CC), Hammonton, NJ, substantial damage. Probable cause: Improper maintenance, which resulted in an over-pressurized landing gear.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

---
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.