| AD Number | 80-10-05 | Status | Active |
| Effective Date | June 23, 1980 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-3771 |
| Product Type | ["Aircraft"] | Product Subtype | ["Large Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Lockheed Martin Corporation |
| Model(s) | 188A 188C |
80-10-05 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-3771. Applies to all Model 188A and 188C series airplanes certificated in all categories.
To prevent loss of strength capability of the wing due to fatigue cracking accomplish the following; unless previously accomplished:
(a) Before accumulating 30,000 hours' time in service or within the next 100 hours' time in service on those airplanes with 30,000 or more hours' time in service, unless accomplished within last 400 hours:
(1) Inspect the wing front spar lower cap per paragraph (d) of this AD; and
(2) Reinspect per paragraph (d) prior to accumulating 500 hours' time in service since the last inspection required by paragraph (a)(1).
(b) Within 400 hours' time in service since inspection required in (a)(2) and thereafter at intervals not to exceed 2,000 hours' time in service, inspect per paragraph (e) of this AD.
(c) Inspections per paragraph (e) of this AD (including the 2,000 hour repetitive inspection) may be substituted for the inspections required by paragraph (a)(1) and (a)(2) of this AD.
(d) Inspect wing front spar lower cap per paragraph 1.D.(1) of Lockheed Alert Service Bulletin 88/SB-699B dated July 13, 1979, hereinafter referred to as Lockheed ASB 88/SB- 699B.
(e) Inspect spar cap adjacent structure per paragraph 1.D.(2), 1.D.(3), 1.D.(4), 1.D.(5), 1.D.(6), 1.D.(7), and 1.D.(8) of Lockheed ASB 88/SB-699B.
(f) Repair any detected cracks prior to further flight per Lockheed ASB 88/SB-699B.
(g) Incorporation of the modifications/repairs defined by the drawings listed below terminates the inspection requirements of this AD for the listed paragraphs in ASB 88/SB-699B.
(1) Drawing Numbers 842174 and 842181 for paragraphs 1.D.1, 1.D.3, 1.D.4 (spar cap only), 1.D.5 (spar cap at Station 203), 1.D.7 (spar cap at Stations 159 and 167).
(2) Drawing Numbers 842185 and 842186 for paragraphs 1.D.2 and 1.D.6.
(3) Drawing Number 842222 for paragraph 1.D.4 (spar web and cap at Station 203 only).
(4) Drawing Number 842217 for paragraph 1.D.4 (spar web at Station 216).
(5) Drawing Number 841738 (spar web at Station 160).
(h) Alternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.
This amendment supersedes Amendment 39-3204 (43 FR 19210) AD 78-09-06.
This amendment becomes effective June 23, 1980.